ruminant > define

noun

• Any of various cud-chewing hoofed mammals having a stomach divided into four (occasionally three) compartments.

adjective

• Related to or characteristic of animals of the suborder Ruminantia or any other animal that chews a cud.
  • usage: "ruminant mammals"

• (a.) Chewing the cud; characterized by chewing again what has been swallowed; of or pertaining to the Ruminantia.
• (n.) A ruminant animal; one of the Ruminantia.