#1 flex v. contract; "flex a muscle". wn
#2 flex n. the act of flexing; "he gave his biceps a flex to impress the ladies". wn
#3 flex v. exhibit the strength of; "The victorious army flexes its invincibility". wn
#4 flex v. [bend] form a curve; "The stick does not bend". wn
#5 flex v. [bend] bend a joint; "flex your wrists"; "bend your knees". wn
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