To bluff is to mislead by a display of confidence or claim of strength, and a bluff is an act of bluffing.
To call someone's bluff means that you think that person is not being honest, and you are challenging him to carry out a threat or to prove that his claim is correct.
Example sentence:
I don't think you have the nerve to do it, so I'm going to call your bluff.
The base of the bridge will be on that bluff.
A bluff.
Beautiful butterflies boldly bluffed their way across the bluff.
The duration of Call My Bluff - UK game show - is 1800.0 seconds.
Call My Bluff - UK game show - ended on 2005-07-17.
Call My Bluff - UK game show - was created on 1965-10-17.
His confident demeanor was just a bluff to hide his nervousness.
YES
The phrase "put your money where your mouth is" is often used to call someone's bluff. It basically means that someone talks a big talk but are they willing to make a bet on it.
Call My Bluff - 1965 I 1965-09-13 was released on: USA: 13 September 1965
Call My Bluff - 1965 I 1965-05-03 was released on: USA: 3 May 1965
Peninsula Point Bluff