n.1. Any of various hoofed, even-toed, usually horned mammals of the suborder Ruminantia, such as cattle, sheep, deer, antelopes, and giraffes, characteristically having a stomach divided into four compartments and chewing a cud that consists of plant food that is regurgitated when partially digested.
2. Any of various animals that ruminate but are not in the Ruminantia, including camels, alpacas, and llamas.
adj.1. Characterized by the chewing of cud.
2. Of or belonging to the Ruminantia.
3. Meditative; contemplative.