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Use "keyholes" in a sentence
"Perhaps the latter, for she seemed to break promises, tell lies, open letters, pry into drawers and boxes, and listen at keyholes from the highest sense of duty."
"But when it’s someone you’ve known for years, it feels a bit like peeping in keyholes.)"
"Procedures that used to require a large incision now can be done through small "keyholes" resulting in much less patient discomfort after the procedure and a much faster recuperation time."