プログレッシブ和英中辞典(第３版)の解説
ひとまわり【一回り】
1 〔1周〕a round
- 池を一回りする
walk around a pond - 彼は息子を連れて町を一回りした
He took his son around the town. - 警備員はビル内を一回りした
The (security) guard made his rounds of the building.
2 〔十二支の〕one cycle of the twelve years of the Chinese zodiac
- 彼は私より一回り年上だ
He is twelve years 「my senior [older than I am].
3 〔大きさの一段階〕
- それは一回り大きい
That is a [one] size larger. - 彼は一回りも二回りも大きくなった
〔体が〕He has grown much bigger.／〔人柄が〕He has matured greatly.