The noun bluff has 3 senses (first 2 from tagged texts)
1. (5) bluff -- (a high steep bank (usually formed by river erosion))
2. (2) bluff -- (pretense that your position is stronger than it really is; "his bluff succeeded in getting him accepted")
3. bluff, four flush -- (the act of bluffing in poker; deception by a false show of confidence in the strength of your cards)
Overview of verb bluff
The verb bluff has 2 senses (no senses from tagged texts)
1. bluff, bluff out -- (deceive an opponent by a bold bet on an inferior hand with the result that the opponent withdraws a winning hand)
2. bluff -- (frighten someone by pretending to be stronger than one really is)
Overview of adj bluff
The adj bluff has 2 senses (no senses from tagged texts)
1. bluff, bold, sheer -- (very steep; having a prominent and almost vertical front; "a bluff headland"; "where the bold chalk cliffs of England rise"; "a sheer descent of rock")
2. bluff -- (bluntly direct and outspoken but good-natured; "a bluff but pleasant manner"; "a bluff and rugged natural leader")