noun
semicircle; half a circumference
Refers to a half-circle shape or half of a circular path. Often used in geometry, sports tracks, or describing routes.
トラックを半周走った。
I ran half a lap around the track.
池の周りを半周する。
Go halfway around the pond.
noun or participle which takes 'suru', transitive verb
go halfway around
Used as a suru-verb to mean traveling or moving halfway around something, such as the earth or a track.
地球を半周する旅に出た。
I set off on a journey halfway around the earth.
船が岬を半周した。
The ship went halfway around the cape.