definition of
flex

[1] #1 flex v. contract; "flex a muscle". wn

[2] #2 flex n. the act of flexing; "he gave his biceps a flex to impress the ladies". wn

[3] #3 flex v. exhibit the strength of; "The victorious army flexes its invincibility". wn

[4] #4 flex v. [bend] form a curve; "The stick does not bend". wn

[5] #5 flex v. [bend] bend a joint; "flex your wrists"; "bend your knees". wn