a high steep bank (usually formed by river erosion) frighten someone by pretending to be stronger than one really is deceive an opponent by a bold bet on an inferior hand with the result that the opponent withdraws a winning hand bluntly direct and outspoken but good-natured; "a bluff but pleasant manner"; "a bluff and rugged natural leader"
An act of bluffing; an expression of self- confidence for the purpose of intimidation; braggadocio; as, that is only bluff, or a bluff
a topographic feature such as a hill, cliff, or embankment with steep slopes (exceeding 18%) rising above the river corridor floodplain (see related but different definition for steep slopes)
To deter (an opponent) from taking the risk of betting on his hand of cards, as the bluffer does by betting heavily on his own hand although it may be of less value