見みせ牌はい

noun

exposed tile; tile shown by mistake

In mahjong, a tile that a player accidentally reveals to others, often resulting in a penalty or disadvantage.

• 見みせ牌はいをしてしまい、相あい手てに手ての内うちがばれた。

  I accidentally showed a tile, and my opponents figured out my hand.

• ルールによっては、見みせ牌はいは罰ばっ則そくの対たい象しょうになる。

  Depending on the rules, an exposed tile may be subject to a penalty.