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Air sac
noun
Definitions
Noun
- 1 An alveolus.
- 2 any of the membranous air-filled extensions of the lungs of birds wordnet
- 3 An extension of a lung of some birds.
- 4 any of the thin-walled extensions of the tracheae of insects wordnet
- 5 a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways wordnet
See also for "air sac"
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Unscramble this word: airsac