bluff² n 1 [C,U] an attempt to make someone believe that you are going to do something when you have no intention of doing it 虚张声势，吓唬: He even threatened to resign, but I'm sure it's all bluff. 他甚至威胁说要辞职，但我肯定那只是虚张声势。 2 call sb's bluff to tell someone to do what they are threatening to do because you do not believe they will do it 要某人实行其所威胁要做的事