Circumference; the girth or the measurement around something (e.g., the circumference of a circle).
木の周りを一周して長さを測った。
I walked around the tree once and measured the length.
この円の周りは約31.4センチだ。
The circumference of this circle is about 31.4 cm.
Surroundings; the area around a place or the vicinity; neighborhood.
学校の周りには公園が多い。
There are many parks around the school.
周りに誰もいない静かな場所で勉強したい。
I want to study in a quiet place with no one around.
駅の周りは飲食店が集中している。
Restaurants are concentrated around the station.
The people or circumstances surrounding someone; one's social circle or surrounding conditions.
周りの人の意見をよく聞いて判断したい。
I want to listen carefully to those around me before making a decision.
彼女は周りに気を配る性格だ。
She is the kind of person who pays attention to others around her.