(1):
(v. t.) A wrinkle or crease in a piece of cloth, or in needlework.
(2):
(v. t. & i.) To draw into wrinkles or unsightly folds; to crease; as, to ruck up a carpet.
(3):
(n.) A heap; a rick.
(4):
(n.) The common sort, whether persons or things; as, the ruck in a horse race.
(5):
(v. i.) To cower; to huddle together; to squat; to sit, as a hen on eggs.
(6):
(n.) A roc.