1. [syn: air bladder, swim bladder, float]
The Collaborative International Dictionary of English v.0.48:
Swim \Swim\, n.
1. The act of swimming; a gliding motion, like that of one
swimming. --B. Jonson.
2. The sound, or air bladder, of a fish.
3. A part of a stream much frequented by fish. [Eng.]
Swim bladder, an air bladder of a fish.
To be in the swim, to be in a favored position; to be
associated with others in active affairs. [Colloq.]
WordNet (r) 3.0 (2006):
n 1: an air-filled sac near the spinal column in many fishes
that helps maintain buoyancy [syn: air bladder, swim