keep a (close) watch(redirected from kept a watch)
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.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.