twitch - noun

a sudden muscle spasm; especially one caused by a nervous condition

twitch - verb

• make an uncontrolled, short, jerky motion
• move with abrupt, seemingly uncontrolled motions
• toss with a sharp movement so as to cause to turn over in the air
• squeeze tightly between the fingers
• move or pull with a sudden motion

twitch - thesaurus

flip   jerk   nip   pinch   squeeze   tweet   twinge   twitching   vellication