bluff - noun

a high steep bank (usually formed by river erosion)

pretense that your position is stronger than it really is

the act of bluffing in poker; deception by a false show of confidence in the strength of your cards

bluff - verb

• deceive an opponent by a bold bet on an inferior hand with the result that the opponent withdraws a winning hand
• frighten someone by pretending to be stronger than one really is

bluff - adjective

• very steep; having a prominent and almost vertical front
• bluntly direct and outspoken but good-natured

bluff - thesaurus

bold   sheer