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Swim bladder
(usually of fish) 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.
📖 Definitions of "Swim bladder"
noun
- 1
(usually of fish) 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.
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