flexure
     n 1: the state of being flexed (as of a joint) [syn: {flection},
          {flexion}]
     2: an angular or rounded shape made by folding; "a fold in the
        napkin"; "a crease in his trousers"; "a plication on her
        blouse"; "a flexure of the colon"; "a bend of his elbow"
        [syn: {fold}, {crease}, {plication}, {crimp}, {bend}]
     3: act of bending a joint; especially a joint between the bones
        of a limb so that the angle between them is decreased
        [syn: {flexion}] [ant: {extension}]
Source: WordNet® 2.0