from The American Heritage® Dictionary of the English Language, 4th Edition
- n. See air bladder.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A gas-filled sac within the bodies of most fish that variously acts as a float, lung, sound-producing organ or an aid to hearing.
from the GNU version of the Collaborative International Dictionary of English
- n. an air bladder of a fish.
from The Century Dictionary and Cyclopedia
- n. Same as swimming-bladder.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an air-filled sac near the spinal column in many fishes that helps maintain buoyancy
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