belly

Your belly is your stomach. If you have a belly ache, you have a pain in your abdomen.

Santa Claus is famous for his jolly laugh and his large belly. The word belly is a more casual way to say "stomach" or "abdomen," just as your navel is informally called a "belly button." A less common way to use the word is as a verb meaning "to swell," which is actually the oldest meaning of belly, from the Old English belig, "bag," and a Germanic root meaning "to swell like a bag."

Definitions of belly
  1. noun
    the region of the body of a vertebrate between the thorax and the pelvis
    synonyms: abdomen, stomach, venter
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    types:
    underbelly, underbody
    the soft belly or underside of an animal's body
    type of:
    body part
    any part of an organism such as an organ or extremity
  2. noun
    the underpart of the body of certain vertebrates such as snakes or fish
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    type of:
    underpart
    a part lying on the lower side or underneath an animal's body
  3. noun
    a protruding abdomen
    synonyms: paunch
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    types:
    bay window, corporation, pot, potbelly, tummy
    slang for a paunch
    type of:
    adipose tissue, fat, fatty tissue
    a kind of body tissue containing stored fat that serves as a source of energy; it also cushions and insulates vital organs
  4. noun
    a part that bulges deeply
    “the belly of a sail”
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    type of:
    bulge, bump, excrescence, extrusion, gibbosity, gibbousness, hump, jut, prominence, protrusion, protuberance, swelling
    something that bulges out or is protuberant or projects from its surroundings
  5. noun
    the hollow inside of something
    “in the belly of the ship”
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    type of:
    inside, interior
    the inner or enclosed surface of something
  6. verb
    swell out or bulge out
    synonyms: belly out
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    type of:
    intumesce, swell, swell up, tumefy, tumesce
    expand abnormally
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