Толковый словарь английского языка Oxford English Reference - bluff

1. v. & n. --v. 1 intr. make a pretence of strength or confidence to gain an advantage. 2 tr. mislead by bluffing. --n. an act of bluffing; a show of confidence or assertiveness intended to deceive. Phrases and idioms call a person's bluff challenge a person thought to be bluffing. Derivatives bluffer n. Etymology: 19th c. (orig. in poker) f. Du. bluffen brag 2. adj. & n. --adj. 1 (of a cliff, or a ship's bows) having a vertical or steep broad front. 2 (of a person or manner) blunt, frank, hearty. --n. a steep cliff or headland. Derivatives bluffly adv. (in sense 2 of adj.). bluffness n. (in sense 2 of adj.). Etymology: 17th-c. Naut. word: orig. unkn.