twitch

twitch
verb
  1. give or cause to give a short, sudden jerking or convulsive movement
    抽动；使抽动
    [no obj.]he saw her lips twitch and her eyelids flutter.
    他看见她嘴唇抽搐，眼皮颤动。
    [with obj.]the dog twitched his ears.
    那狗抽动着耳朵。
    ■[with obj. and adverbial]cause to move in a specified direction by giving a sharp pull
    急抽，急扯；猛拉
    he twitched a cigarette out of a packet.
    他从一包烟中抽出一支。
  2. [with obj.]use a twitch to subdue (a horse)
    扯绳勒（马）
noun
  1. a short, sudden jerking or convulsive movement
    抽动，痉挛
    his mouth gave a slight twitch.
    他的嘴巴微微抽动了一下。
    ■a sudden pull or jerk
    急扯，猛拉
    he gave a twitch at his moustache.
    他猛地拉扯了一下胡子。
    ■a sudden sharp sensation: a pang
    抽痛，刺痛
    he felt a twitch of annoyance.
    他突然感到烦恼之痛。
  2. a stick with a small noose attached to one end. The noose may be twisted around the upper lip or the ear of a horse to subdue it, especially during veterinary procedures
    马勒
语源
  1. Middle English: of Germanic origin: related to Old English twiccian 'to pluck, pull sharply'
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