noun, noun or participle which takes 'suru', intransitive verb
one round; one circuit; one lap
Used for completing a single circuit, turn, or round of something, often with verbs like する or 回る.
公園を一回りしてから帰りましょう。
Let's go home after taking one turn around the park.
彼はトラックを一回りした。
He did one lap of the track.
noun, adverb
one size (larger or smaller)
Indicates a difference of one size, typically in clothing, shoes, or other sized items. Often used with 大きい or 小さい.
この靴は一回り大きい。
These shoes are one size too big.
彼は私より一回り年上だ。
He is about one round older than me (e.g., 12 years older).
noun
one cycle of the Chinese zodiac (12 years)
Refers to a full 12-year cycle of the Chinese zodiac. Often used to describe age differences or periods.
彼は私より一回り年下だ。
He is 12 years younger than me.
一回り前の出来事を覚えている。
I remember the events from one zodiac cycle ago.