English Explanatory Dictionary

sleep with one eye open

English dictionary entry

Meanings

verb
  1. To remain vigilant at all times, especially by remaining partially awake or sleeping only lightly so as to avoid being caught off guard.

Pronunciation

LL-Q1860 (eng)-Flame, not lame-sleep with one eye open.wav

Word forms

sleep with one eye open sleeps with one eye open sleeping with one eye open slept with one eye open

Etymology

Some animals sleep with one eye open, so as to remain alert to threats.

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