a big fish (in a small pond)

成語所屬單字big

a big fish (in a small pond) — 慣用語

1. a person who seems important inside a small group or place.

1.慣用語
釋義

小圈子裡的大人物

a person who seems important inside a small group or place.

例句

In that village school, Coach Lin was a big fish in a small pond.