九ちゅー

numeric

nine

Used in mahjong to refer to the number nine. The reading チュー is derived from Chinese jiǔ. Other mahjong readings include クー and キュー.

from Chinese jiǔ

• 麻雀まーじゃんで「チュー」は九ちゅーを意い味みする。

  In mahjong, 'chū' means nine.