twitch

中文： 抽搐

1. A brief, small (sometimes involuntary) movement out of place and then back again; a spasm. (countable, uncountable) · I saw a little twitch in the man's face, and knew he was lying.
2. Action of spotting or seeking out a bird, especially a rare one. (countable, informal, uncountable)
3. A stick with a hole in one end through which passes a loop, which can be drawn tightly over the upper lip or an ear of a horse and twisted to keep the animal quiet during minor surgery. (countable, uncountable)
4. A brief, contractile response of a skeletal muscle elicited by a single maximal volley of impulses in the neurons supplying it. (countable, uncountable)
5. The sudden narrowing almost to nothing of a vein of ore. (countable, uncountable)
6. A trip taken in order to observe a rare bird. (countable, uncountable)

复数 twitches