alveolus

1. n. A cell in a honeycomb. Source: opted

2. n. A small cavity in a coral, shell, or fossil Source: opted

3. n. A small depression, sac, or vesicle, as the socket of a tooth, the air cells of the lungs, the ultimate saccules of glands, etc. Source: opted

4. n. a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways Source: wordnet

5. n. a bony socket in the alveolar ridge that holds a tooth Source: wordnet

6. 1. A cell in a honeycomb. 2. (Zoöl.) A small cavity in a coral, shell, or fossil 3. (Anat.) A small depression, sac, or vesicle, as the socket of a tooth, the air cells of the lungs, the ultimate saccules of glands, etc. Source: webster

7. n:100 n. a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways Source: ecdict

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