American English

Definition of lookout noun from the Oxford Advanced American Dictionary



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  1. 1a place for watching from, especially for danger or an enemy coming toward you a lookout point/tower
  2. 2a person who has the responsibility of watching for something, especially danger, etc. One of the men stood at the door to act as a lookout.
  3. Idioms
    be on the lookout (for somebody/something), keep a lookout (for somebody/something) (informal)
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    to watch carefully for someone or something in order to avoid danger, etc. or in order to find something you want The public should be on the lookout for symptoms of the disease.
See the Oxford Advanced Learner's Dictionary entry: lookout