air bladder

/ɛər ˌblædər/
IPA guide

Other forms: air bladders

Definitions of air bladder
  1. noun
    an air-filled sac near the spinal column in many fishes that helps maintain buoyancy
    synonyms: float, swim bladder
    see moresee less
    type of:
    sac
    a structure resembling a bag in an animal
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