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.
||Al"ve*us (&?;), n.; pl. Alvei (&?;). [L.] The channel of a river. Weate.
Al"vine (&?;), a. [L. alvus belly: cf. F. alvin.] Of, from, in, or pertaining to, the belly or the intestines; as, alvine discharges; alvine concretions.