—adj. 1. good-naturedly direct, blunt, or frank; heartily outspoken: a big, bluff, generous man. 2. presenting a bold and nearly perpendicular front, as a coastline: a bluff, precipitous headland. 3. Naut.(of the bow of a vessel) having a full, blunt form.
—n. 1. a cliff, headland, or hill with a broad, steep face.
2. North Dakota, Wisconsin, and the Canadian Prairie Provinces.a clump or grove of trees on a prairie or other generally treeless area.
Pronunciation: (bluf),[key] —v.t. 1. to mislead by a display of strength, self-confidence, or the like: He bluffed me into believing that he was a doctor. 2. to gain by bluffing: He bluffed his way into the job. 3. Poker.to deceive by a show of confidence in the strength of one's cards.
—v.i. to mislead someone by presenting a bold, strong, or self-confident front: That open face makes it impossible for him to bluff.
—n. 1. an act or instance or the practice of bluffing: Her pathetic story was all a bluff to get money from us. His assertive manner is mostly bluff. 2. a person who bluffs; bluffer: That big bluff doesn't have a nickel to his name. 3. call someone's bluff, to expose a person's deception; challenge someone to carry out a threat: He always said he would quit, so we finally called his bluff.