at the top of the hour

: the highest point, level, or part of something : summit, crown

: a garment worn on the upper body

: the head of a plant

: of, relating to, or being at the top : uppermost

: chief, leading

: of the highest quality, amount, or degree

: to be or become higher than : overtop

: to be superior to : excel, surpass

: to gain ascendancy over : dominate

: a commonly cylindrical or conoidal device that has a tapering point on which it is made to spin and that is used especially as a toy

: place : locality

: topology

: a time or office for daily liturgical devotion

: the 24th part of a day : 60 minutes

: the time of day reckoned in two 12-hour periods