also: ホウテイラオユイ
noun
win on the last discard of a round
Mahjong term: winning by drawing the last discarded tile of the round, often considered a lucky or dramatic finish.
from Chinese hé dǐ lāo yú
彼は河底撈魚で逆転勝利を収めた。
He won a come-from-behind victory with a win on the last discard.
河底撈魚は滅多に起こらない役だ。
Winning on the last discard is a rare hand.
海底撈月 is winning on the last tile drawn from the wall, while 河底撈魚 is winning on the last discarded tile.
From Chinese 河底撈魚 (hé dǐ lāo yú), literally 'fishing a fish from the river bottom', referring to the last discarded tile.