counter
counter for tours, cycles, rounds, circuits
Used after a number to count complete cycles, rounds, or circuits of an activity or journey. Often seen in contexts like patrols, tours, or repeated processes.
See also: 一巡
警備員が建物を一巡した。
The security guard made one round of the building.
このコースを三巡するとちょうど10キロになる。
Three circuits of this course make exactly 10 kilometers.