DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   flex
       n 1: the act of flexing; "he gave his biceps a flex to impress
            the ladies"
       v 1: contract; "flex a muscle"
       2: exhibit the strength of; "The victorious army flexes its
          invincibility"
       3: form a curve; "The stick does not bend" [syn: bend, flex]
          [ant: straighten, unbend]
       4: bend a joint; "flex your wrists"; "bend your knees" [syn:
          flex, bend]
       5: cause (a plastic object) to assume a crooked or angular form;
          "bend the rod"; "twist the dough into a braid"; "the strong
          man could turn an iron bar" [syn: flex, bend, deform,
          twist, turn] [ant: unbend]