We found one dictionary that defines the word keep a close eye:

General (1 matching dictionary)

1. keep a close eye: Merriam-Webster

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