Search Result for "air_bladder":
Wordnet 3.0

NOUN (1)

1. an air-filled sac near the spinal column in many fishes that helps maintain buoyancy;
[syn: air bladder, swim bladder, float]


The Collaborative International Dictionary of English v.0.48:

air bladder \air" blad`der\ 1. (Anat.) An air sac, sometimes double or variously lobed, in the visceral cavity of many fishes. It originates in the same way as the lungs of air-breathing vertebrates, and in the adult may retain a tubular connection with the pharynx or esophagus. [1913 Webster] 2. A sac or bladder full of air in an animal or plant; also an air hole in a casting. [1913 Webster]
WordNet (r) 3.0 (2006):

air bladder n 1: an air-filled sac near the spinal column in many fishes that helps maintain buoyancy [syn: air bladder, swim bladder, float]