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Swim bladder
noun
Definitions
Noun
- 1 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. usually
- 2 an air-filled sac near the spinal column in many fishes that helps maintain buoyancy wordnet
See also for "swim bladder"
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Unscramble this word: swimbladder