definition of
twitch

[1] #1 twitch v. [jerk] make an uncontrolled, short, jerky motion; "his face is twitching". wn

[2] #2 twitch v. [jerk] move with abrupt, seemingly uncontrolled motions; "The patient's legs were jerkings". wn

[3] #3 twitch n. [twitching, vellication] a sudden muscle spasm; especially one caused by a nervous condition. wn

[4] #4 twitch v. [flip] toss with a sharp movement so as to cause to turn over in the air. wn

[5] #5 twitch v. [pinch, squeeze, twinge, tweet, nip] squeeze tightly between the fingers; "He pinched her behind"; "She squeezed the bottle". wn