Pronunciation: (twich),[key] —v.t. 1. to tug or pull at with a quick, short movement; pluck: She twitched him by the sleeve. 2. to jerk rapidly: The rider twitched the reins a couple of times. 3. to move (a part of the body) with a sudden, jerking motion.
4. to pinch or pull at sharply and painfully; give a smarting pinch to; nip.
—v.i. 1. to move spasmodically or convulsively; jerk; jump.
2. to give a sharp, sudden pull; tug; pluck (usually fol. by at): He constantly twitched at his collar. 3. to ache or hurt with a sharp, shooting pain; twinge: That back tooth twitches a bit.
—n. 1. a quick, jerky movement of the body or of some part of it.
2. involuntary, spasmodic movement of a muscle; tic: He gets a twitch in his left eye when he's nervous. 3. a short, sudden pull or tug; jerk.
4. a bodily or mental twinge, as of pain, conscience, etc.; pang.
5. a loop or noose placed over the muzzle of a horse and tightened by twisting a stick or handle to which it is attached, used as a restraining device during a painful operation.