n An act of bluffing; an expression of self-confidence for the purpose of intimidation; braggadocio; as, that is only 'bluff', or a 'bluff'.
n A high, steep bank, as by a river or the sea, or beside a ravine or plain; a cliff with a broad face.
a Abrupt; roughly frank; unceremonious; blunt; brusque; as, a 'bluff' answer; a 'bluff' manner of talking; a 'bluff' sea captain.