Tush

Part of speech: noun (n.)

A long, pointed tooth; a tusk; -- applied especially to certain teeth of horses.

Part of speech: interjection (interj.)

An exclamation indicating check, rebuke, or contempt; as, tush, tush! do not speak of it. Tush, say they, how should God perceive it Bk. of Com. Prayer (Ps. lxxiii. 11).