Attempt to deceive (5)
'attempt to deceive' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for bluff that I've seen before include "Honest" , "What a poker player does - or tries to" , "Pretend your position is stronger than it really is" , "Challengers may call it" , "Hoodwink" .)
'attempt to deceive' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for try it on that I've seen before include "See how far one may go" , "test a new suit" , "trick" , "Attempt to get away with something" , "See how far one can push things" .)