verb
bluffs; bluffed; bluffing
to pretend that you will do something or that you know or have something in order to trick someone into doing what you want [no obj]
[+ obj] US :to pretend to do or make (something)
noun
plural bluffs
[count] :a false threat or claim that is meant to get someone to do something
call your bluff
If you have made a bluff or a threat and people call your bluff, they tell you to do the thing you have threatened to do because they do not believe that you will really do it.
noun
plural bluffs
[count] :a high, steep area of land :cliff
adjective
[more ~; most ~] :having a very open, honest, and direct way of talking that is friendly but not always polite