We found one dictionary that defines the word keep eye out:

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1. keep eye out: Idioms

Phrases: keep an eye out, keep an eye out for, more... ▸ Words similar to keep eye out ▸ Usage examples for keep eye out ▸ Idioms related to keep eye out ▸ Wikipedia articles (New!) ▸ Words that often appear near keep eye out ▸ Rhymes of keep eye out ▸ Invented words related to keep eye out