清一色ちんいーそー

noun

full flush; one-suit hand

Mahjong term: a winning hand composed entirely of tiles from a single suit. Also used figuratively for something uniform or homogeneous.

from Chinese qīng yī sè

• 彼かれは清ちん一色いーそーで上あがった。

  He won with a full flush.

• このプロジェクトのメンバーは清ちん一色いーそーのエンジニアだ。

  The members of this project are all engineers, a homogeneous group.

noun

homogeneity; uniformity

Extended use from mahjong: describes a situation where everything is of the same kind or from the same source, often in manufacturing or team composition.

• この製せい品ひんは清ちん一色いーそーの国こく産さん部ぶ品ひんで作つくられている。

  This product is made entirely from domestically sourced parts.