at (some time) sharp(redirected from at sharp)
at (some time) sharp
At an exact time, with the emphasis that one must not be late. We need to leave for the airport at 8 AM sharp tomorrow morning. Please be here at 6:30 sharp.
See also: sharp
at some time sharp
exactly at the time named. You must be here at noon sharp. The plane is expected to arrive at seven forty-five sharp.