keep a (close) watch

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keep a (close) watch

To guard, protect, or ensure the welfare of someone or something, often through close observation. I felt better sending the kids to camp when I knew Mrs. James would be there to keep a close watch over them. I can't help but feeling that I had an angel keeping a watch over me that day.
See also: keep, watch
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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References in periodicals archive ?
They kept a close watch on my folks; maybe we were a threat to the country.