If something is hollow, it is empty on the inside. A chocolate Easter bunny looks like so much chocolate until you realize that it is hollow and quickly eaten.

The idea of emptiness is apparent in the other uses for hollow too. A valley between mountains is called a hollow and if you're really thin, you may have hollow cheeks. Things like words and promises are hollow if the person uttering them does not intend to keep them. And a hollow victory is not very satisfying, as it means that you have reached your goal, but lost something more important along the way.

Definitions of hollow

adj not solid; having a space or gap or cavity

“a hollow wall”
“a hollow tree”
hollow cheeks”
“his face became gaunter and more hollow with each year”
holding or containing nothing
being or suggesting a cavern
deep-set, recessed, sunken
having a sunken area
fistular, fistulate, fistulous
hollow and tube-shaped like a reed
cannular, tube-shaped, tubelike, tubular, vasiform
constituting a tube; having hollow tubes (as for the passage of fluids)
entirely of one substance with no holes inside
being the same substance throughout
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adj as if echoing in a hollow space

“the hollow sound of footsteps in the empty ballroom”
having a tendency to reverberate or be repeatedly reflected

adj devoid of significance or point

“a hollow victory”
empty, vacuous
meaningless, nonmeaningful
having no meaning or direction or purpose

n a cavity or space in something

“hunger had caused the hollows in their cheeks”
Type of:
cavity, enclosed space
space that is surrounded by something

n a depression hollowed out of solid matter

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burrow, tunnel
a hole made by an animal, usually for shelter
gopher hole
a hole in the ground made by gophers
kettle, kettle hole
(geology) a hollow (typically filled by a lake) that results from the melting of a mass of ice trapped in glacial deposits
cavity, pit
a sizeable hole (usually in the ground)
chuckhole, pothole
a pit or hole produced by wear or weathering (especially in a road surface)
rabbit burrow, rabbit hole
a hole in the ground as a nest made by wild rabbits
hole made by a burrowing worm
a sloping pit with a stake in the middle used as an obstacle to the enemy
barbecue pit
a pit where wood or charcoal is burned to make a bed of hot coals suitable for barbecuing meat
borrow pit
a pit created to provide earth that can be used as fill at another site
(golf) the cavity left when a piece of turf is cut from the ground by the club head in making a stroke
fire pit
a pit whose floor is incandescent lava
a pit filled with loose wet sand into which objects are sucked down
a large pit in sandy ground from which sand is dug
a pit over which lumber is positioned to be sawed by two men with a long two-handed saw
tar pit
a natural accumulation of bitumens at the surface of the earth; often acts as a trap for animals whose bones are thus preserved
rabbit warren, warren
a series of connected underground tunnels occupied by rabbits
Type of:
depression, natural depression
a sunken or depressed geological formation

n a small valley between mountains

“he built himself a cabin in a hollow high up in the Appalachians”
dell, dingle
a small wooded hollow
Type of:
vale, valley
a long depression in the surface of the land that usually contains a river

v remove the inner part or the core of

dig, excavate
excavate horizontally
ditch, trench
cut a trench in, as for drainage
Type of:
remove, take, take away, withdraw
remove something concrete, as by lifting, pushing, or taking off, or remove something abstract

v remove the interior of

hollow out a tree trunk”
core out, hollow out
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gouge, rout
make a groove in
scallop, scollop
form scallops in
make holes in
draw in, suck in
draw in as if by suction
scoop out
hollow out with a scoop
cavern, cavern out
hollow out as if making a cavern
cave, undermine
hollow out as if making a cave or opening
dig, dig out
create by digging
form by hollowing
remove the core or center from
excavate the earth beneath
take (root crops) out of the ground
dig a trench or trenches
make a hole with a wooden hand tool
Type of:
make void or empty of contents

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