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shell

shells; shelled

A hard surface that covers an animal is its shell. Sea urchins, turtles, and lobsters all have protective shells. The largest turtle shell is nearly 10 feet wide!

Most shells are made of calcium carbonate, and they grow along with the animal. Bird embryos are nestled inside shells, and nuts have shells too. Other uses for shell come from the biological meaning. A rifle shell has a shell-like metal casing. An empty structure, with only walls, is the shell of a building. And to "come out of your shell," means to emerge, like a turtle, from your shyness.

Definitions of shell
  1. noun
    the material that forms the hard outer covering of many animals
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    types:
    mother-of-pearl, nacre
    the iridescent internal layer of a mollusk shell
    type of:
    animal material
    material derived from animals
  2. noun
    the hard largely calcareous covering of a mollusk or a brachiopod
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    types:
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    valve
    one of the paired hinged shells of certain molluscs and of brachiopods
    valve
    the entire one-piece shell of a snail and certain other molluscs
    scallop shell
    a shell of a scallop
    oyster shell
    a shell of an oyster
    phragmacone, phragmocone
    the thin conical chambered internal shell (either straight or curved) of a belemnite
    seashell
    the shell of a marine organism
    clamshell
    the shell of a clam
    type of:
    cover, covering, natural covering
    a natural object that covers or envelops
  3. noun
    hard outer covering or case of certain organisms such as arthropods and turtles
    synonyms: carapace, cuticle, shield
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    types:
    cuticula
    the outer body wall of an insect
    type of:
    scute
    large bony or horny plate as on an armadillo or turtle or the underside of a snake
  4. verb
    look for and collect shells by the seashore
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    type of:
    gather
    look for (food) in nature
  5. verb
    remove from its shell or outer covering
    shell the legumes”
    shell mussels”
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    types:
    pod
    take something out of its shell or pod
    type of:
    remove, take, take away, withdraw
    remove something concrete, as by lifting, pushing, or taking off, or remove something abstract
  6. noun
    a rigid covering that envelops an object
    “the satellite is covered with a smooth shell of ice”
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    type of:
    cover, covering, natural covering
    a natural object that covers or envelops
  7. noun
    the hard usually fibrous outer layer of some fruits especially nuts
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    types:
    nutshell
    the shell around the kernel of a nut
    type of:
    hull
    dry outer covering of a fruit or seed or nut
  8. noun
    the exterior covering of a bird's egg
    synonyms: eggshell
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    type of:
    cover, covering, natural covering
    a natural object that covers or envelops
  9. noun
    a very light narrow racing boat
    synonyms: racing shell
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    types:
    racing skiff, single shell
    a shell for a single oarsman
    scull
    a racing shell that is propelled by sculls
    type of:
    racing boat
    a boat propelled by oarsmen and designed for racing
  10. noun
    ammunition consisting of a cylindrical metal casing containing an explosive charge and a projectile; fired from a large gun
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    artillery shell
    a shell fired by artillery
    shotgun shell
    a shell containing lead shot; used in shotguns
    shrapnel
    shell containing lead pellets that explodes in flight
    tank shell
    a shell fired by the cannon on a tank
    whizbang, whizbang shell, whizzbang
    a small high-velocity shell; it makes a whizzing sound followed by a bang when it hits
    type of:
    ammo, ammunition
    projectiles to be fired from a gun
  11. verb
    create by using explosives
    synonyms: blast
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    type of:
    create, make
    make or cause to be or to become
  12. verb
    use explosives on
    “The enemy has been shelling us all day”
    synonyms: blast
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    types:
    crump
    bombard with heavy shells
    type of:
    bomb, bombard
    throw bombs at or attack with bombs
  13. noun
    the housing or outer covering of something
    synonyms: case, casing
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    types:
    boot
    protective casing for something that resembles a leg
    gear box, gear case, gearbox
    the shell (metal casing) in which a train of gears is sealed
    jacket
    the tough metal shell casing for certain kinds of ammunition
    type of:
    housing
    a protective cover designed to contain or support a mechanical component
  14. noun
    a metal sheathing of uniform thickness (such as the shield attached to an artillery piece to protect the gunners)
    synonyms: plate, scale
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    types:
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    armor plate, armor plating, armour plate, plate armor, plate armour
    specially hardened steel plate used to protect fortifications or vehicles from enemy fire
    horseshoe, shoe
    U-shaped plate nailed to underside of horse's hoof
    shell plating
    the plates covering the frame of a steel ship and corresponding to the planking of a wooden ship
    backplate
    plate armor protecting the back; worn as part of a cuirass
    beaver
    a movable piece of armor on a medieval helmet used to protect the lower face
    brassard
    armor plate that protects the arm
    aegis, breastplate, egis
    armor plate that protects the chest; the front part of a cuirass
    cannon
    (Middle Ages) a cylindrical piece of armor plate to protect the arm
    chamfron, chanfron, front-stall, frontstall, testiere
    medieval plate armor to protect a horse's head
    cubitiere
    body armor that protects the elbow
    cuisse
    armor plate that protects the thigh
    epauliere
    armor plate that protects the shoulder
    fauld
    a piece of armor plate below the breastplate
    gorget
    armor plate that protects the neck
    greave, jambeau
    armor plate that protects legs below the knee
    helmet
    armor plate that protects the head
    knee piece
    armor plate that protects the knee
    nosepiece
    armor plate that protects the nose
    palette, pallette
    one of the rounded armor plates at the armpits of a suit of armor
    roundel
    round piece of armor plate that protects the armpit
    skirt of tasses
    armor plate that protects the body below the waist
    sabaton, solleret
    armor plate that protects the foot; consists of mail with a solid toe and heel
    tasse, tasset
    one of two pieces of armor plate hanging from the fauld to protect the upper thighs
    tuille
    armor plate that protects the hip and thigh
    visor, vizor
    a piece of armor plate (with eye slits) fixed or hinged to a medieval helmet to protect the face
    type of:
    shield
    a protective covering or structure
  15. verb
    fall out of the pod or husk
    “The corn shelled
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    type of:
    emerge
    come out into view, as from concealment
  16. verb
    remove the husks from
    synonyms: husk
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    type of:
    remove, take, take away, withdraw
    remove something concrete, as by lifting, pushing, or taking off, or remove something abstract
  17. verb
    come out better in a competition, race, or conflict
    synonyms: beat, beat out, crush, trounce, vanquish
    beat, circumvent, outfox, outsmart, outwit, overreach
    beat through cleverness and wit
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    outpoint, outscore
    score more points than one's opponents
    walk over
    beat easily
    eliminate
    remove from a contest or race
    mop up, pip, rack up, whip, worst
    defeat thoroughly
    whomp
    beat overwhelmingly
    get the best, have the best, overcome
    overcome, usually through no fault or weakness of the person that is overcome
    rout, spread-eagle, spreadeagle
    defeat disastrously
    get the jump
    be there first
    cheat, chicane, chouse, jockey, screw, shaft
    defeat someone through trickery or deceit
    exceed, outdo, outgo, outmatch, outperform, outstrip, surmount, surpass
    be or do something to a greater degree
    conquer, get over, master, overcome, subdue, surmount
    get on top of; deal with successfully
    best, outdo, outflank, scoop, trump
    get the better of
    outfight
    to fight better than; get the better of
    overmaster, overpower, overwhelm
    overcome by superior force
    checkmate, mate
    place an opponent's king under an attack from which it cannot escape and thus ending the game
    immobilise, immobilize
    make defenseless
    outplay
    excel or defeat in a game
    annihilate, bat, clobber, cream, drub, lick, thrash
    beat thoroughly and conclusively in a competition or fight
    beat, circumvent, outfox, outsmart, outwit, overreach
    beat through cleverness and wit
    outgrow
    grow faster than
    outcry, outshout
    shout louder than
    outroar
    roar louder than
    outsail
    sail faster or better than
    outdraw
    draw a gun faster, or best someone in a gunfight
    outsell
    sell more than others
    outsell
    be sold more often than other, similar products
    outpace
    surpass in speed
    better, break
    surpass in excellence
    outshine
    attract more attention and praise than others
    outrange
    have a greater range than (another gun)
    outweigh
    be heavier than
    outbrave
    be braver than
    out-herod
    surpass someone in cruelty or evil
    outfox
    outdo someone in trickery
    shame
    surpass or beat by a wide margin
    bulldog
    throw a steer by seizing the horns and twisting the neck, as in a rodeo
    outmaneuver, outmanoeuvre, outsmart
    defeat by more skillful maneuvering
    steamroll, steamroller
    overwhelm by using great force
    outmarch
    march longer distances and for a longer time than
    outwear
    last longer than others
    type of:
    defeat, get the better of, overcome
    win a victory over
  18. verb
    hit the pitches of hard and regularly
    “He shelled the pitcher for eight runs in the first inning”
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    type of:
    hit
    cause to move by striking
DISCLAIMER: These example sentences appear in various news sources and books to reflect the usage of the word ‘shell'. Views expressed in the examples do not represent the opinion of Vocabulary.com or its editors. Send us feedback
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