ALVEOLUS
- a small body cavity, also ALVEOLE [n ALVEOLI]
- one of the terminal secretory units of a racemose gland
- a small anatomical cavity [n ALVEOLI] : ALVEOLATE [adj]
- the socket within the jawbone in which the root or roots of a tooth are set
- little cavity, pit, or cell, as a cell of a honeycomb
- air cell of the lungs, formed by the terminal dilation of tiny air passageways