海底撈月はいていらおゆえ

noun

haitei winning hand; winning on the last tile drawn from the wall

A mahjong yaku: winning by drawing the very last tile from the wall. The term is a direct borrowing from Chinese mahjong terminology.

from Chinese hǎidǐ-lāoyuè

• 海底はいてい撈月らおゆえで逆ぎゃく転てん勝しょう利りを収おさめた。

  He pulled off a comeback victory with a haitei winning hand.