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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