enclosure

An enclosure is something that closes you in, like a pen or a cage. When a cobra disappeared from an enclosure at the Bronx Zoo, the entire Reptile House had to be shut down until the snake was found.

An enclosure can also be something that's included in an envelope with a cover letter of some sort. If you're sending a letter to your literary agent and you’re including a few pages of your latest limericks, you might put "enc." at the bottom of the letter, to indicate that you've included something extra in the envelope — an enclosure.

Primary Meanings of enclosure

1.
n
a structure consisting of an area that has been enclosed for some purpose
2.
n
something (usually a supporting document) that is enclosed in an envelope with a covering letter
Full Definitions of enclosure
1

n a structure consisting of an area that has been enclosed for some purpose

Examples:
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Holy Sepulcher
the sepulcher in which Christ's body lay between burial and resurrection
Marineland
a commercial aquarium featuring trained dolphins
Mausoleum at Halicarnasus
a white marble mausoleum 140 feet high built in 352 BC at Halicarnassus as a memorial to a king; destroyed in 1402
Taj Mahal
beautiful mausoleum at Agra built by the Mogul emperor Shah Jahan (completed in 1649) in memory of his favorite wife
Types:
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cage, coop
an enclosure made or wire or metal bars in which birds or animals can be kept
cargo area, cargo deck, cargo hold, hold, storage area
the space in a ship or aircraft for storing cargo
catchall
an enclosure or receptacle for odds and ends
chamber
a natural or artificial enclosed space
compound
an enclosure of residences and other building (especially in the Orient)
dock
an enclosure in a court of law where the defendant sits during the trial
echo chamber
an enclosed space for producing reverberation of a sound
lock, lock chamber
enclosure consisting of a section of canal that can be closed to control the water level; used to raise or lower vessels that pass through it
nacelle
a streamlined enclosure for an aircraft engine
pen
an enclosure for confining livestock
pit
an enclosure in which animals are made to fight
pen, playpen
a portable enclosure in which babies may be left to play
plenum
an enclosed space in which the air pressure is higher than outside
dog pound, pound
a public enclosure for stray or unlicensed dogs
niche, recess
an enclosure that is set back or indented
vivarium
an indoor enclosure for keeping and raising living animals and plants and observing them under natural conditions
yard
an enclosure for animals (as chicken or livestock)
air lock, airlock
a chamber that provides access to space where air is under pressure
alcove, bay
a small recess opening off a larger room
apse, apsis
a domed or vaulted recess or projection on a building especially the east end of a church; usually contains the altar
aquarium, fish tank, marine museum
a tank or pool or bowl filled with water for keeping live fish and underwater animals
barnyard
a yard adjoining a barn
birdcage
a cage in which a bird can be kept
air-raid shelter, bomb shelter, bombproof
a chamber (often underground) reinforced against bombing and provided with food and living facilities; used during air raids
burial chamber, sepulcher, sepulchre, sepulture
a chamber that is used as a grave
caisson, cofferdam, pneumatic caisson
large watertight chamber used for construction under water
camera obscura
a darkened enclosure in which images of outside objects are projected through a small aperture or lens onto a facing surface
chicken run, chicken yard, fowl run, hen yard
an enclosed yard for keeping poultry
cockpit
a pit for cockfights
cinerarium, columbarium
a niche for a funeral urn containing the ashes of the cremated dead
core
the chamber of a nuclear reactor containing the fissile material where the reaction takes place
cattle pen, corral, cow pen
a pen for cattle
creep
a pen that is fenced so that young animals can enter but adults cannot
cylinder, piston chamber
a chamber within which piston moves
farmyard
an area adjacent to farm buildings
fireplace, hearth, open fireplace
an open recess in a wall at the base of a chimney where a fire can be built
firing chamber, gun chamber
chamber that is the part of a gun that receives the charge
fold, sheep pen, sheepcote, sheepfold
a pen for sheep
furnace
an enclosed chamber in which heat is produced to heat buildings, destroy refuse, smelt or refine ores, etc.
holding paddock, holding pen, holding yard
a pen where livestock is temporarily confined
hutch
a cage (usually made of wood and wire mesh) for small animals
hyperbaric chamber
a large chamber in which the oxygen pressure is above normal for the atmosphere; used in treating breathing disorders or carbon monoxide poisoning
kraal
a pen for livestock in southern Africa
mihrab
(Islam) a niche in the wall of a mosque that indicates the direction of Mecca
paddock
pen where racehorses are saddled and paraded before a race
particle detector
a chamber in which particles can be made visible
pinfold
a pen where stray animals are confined
cavity resonator, resonating chamber, resonator
a hollow chamber whose dimensions allow the resonant oscillation of electromagnetic or acoustic waves
rodeo
an enclosure for cattle that have been rounded up
squirrel cage
cage with a cylindrical framework that rotates as a small animal runs inside it
steam chest
the chamber from which steam is distributed to a cylinder
stockyard
enclosed yard where cattle, pigs, horses, or sheep are kept temporarily
fireroom, stokehold, stokehole
(nautical) chamber or compartment in which the furnaces of a ship are stoked or fired
packing box, stuffing box
a small chamber in which packing is compressed around a reciprocating shaft or piston to form a seal
pigpen, pigsty, sty
a pen for swine
terrarium
a vivarium in which selected living plants are kept and observed
tokamak
a doughnut-shaped chamber used in fusion research; a plasma is heated and confined in a magnetic bottle
vacuum chamber
a chamber from which nearly all matter (especially air) has been removed
Type of:
area
a part of a structure having some specific characteristic or function

n a naturally enclosed space

Synonyms:
natural enclosure
Types:
cavern
any large dark enclosed space
matrix
an enclosure within which something originates or develops (from the Latin for womb)
Type of:
space
an empty area (usually bounded in some way between things)

n the act of enclosing something inside something else

Synonyms:
enclosing, envelopment, inclosure
Types:
boxing, packing
the enclosure of something in a package or box
encasement, incasement
the act of enclosing something in a case
bundling
the act of binding something into a bundle
Type of:
insertion, introduction, intromission
the act of putting one thing into another
2

n something (usually a supporting document) that is enclosed in an envelope with a covering letter

Synonyms:
inclosure
Type of:
document, papers, written document
writing that provides information (especially information of an official nature)