mù​bù​jiāo​jié

not sleep a wink

  1. noun
    eye
    (bound form) eye; related to vision
  2. adverb
    not
    Negative adverb used before verbs, adjectives, and other adverbs to indicate negation; also used as a bound-form prefix to form terms with opposite meanings
  3. to close the eyes
    to close one's eyes to sleep; often used in the negative to indicate not sleeping a wink 目不交睫 mù​bù​jiāo​jié