対子といつ

noun

pair; eyes

In mahjong, a pair of identical tiles; 'eyes' is the traditional English mahjong term for the pair needed to complete a winning hand.

from Chinese duì zi

• あとトイツが一ひとつあれば上あがれるのに。

  If I had just one more pair, I could win.

• この手てはトイツが多おおすぎて難むずかしい。

  This hand has too many pairs, making it difficult.