Sleeping; asleep.In heraldry, lying down with its head on its fore paws, as if asleep: said of a beast used as a bearing.Hibernating: said of certain animals.In a state of rest or inactivity; quiescent; not in action, movement, force, or operation; being or kept in abeyance: as, a dormant rebellion; a dormant title; dormant privileges.n. A beam; a sleeper: formerly also dormond, dormant-tree. Also dormer. Halliwell.n. A dish which remains from the beginning to the end of a repast, such as cold pies, hams, and potted meats, placed down the middle of the table at a large entertainment; a centerpiece which is not removed.In botany, not active or growing.