一枚看板 いちまいかんばん
ichimai kamban

Noun

1. leading player; prima donna; box-office star

Yojijukugo
あの女優 じょゆう一座 いちざ いっ まい看板 かんばんだ。
ano joyūwa ichizano ichimai kambanda.
That actress is the shining star of the company.
Noun

2. best item one has (to show); one's sole Sunday best; one's single area of expertise

Yojijukugo