also: だいスーシー
noun
big four winds; winning hand with four kongs/pungs of winds
A high-scoring mahjong hand consisting of four sets (kongs or pungs) of wind tiles, one of each wind. Domain-specific mahjong term.
from Chinese dà sì xǐ
大四喜は役満の中でも特に難しい役です。
Big Four Winds is a particularly difficult yakuman hand.
彼は大四喜を和了って、一気にトップに立った。
He won with a Big Four Winds hand and suddenly took the lead.
小四喜 (Little Four Winds) is a similar hand with three kongs/pungs of winds and a pair of the fourth wind, worth a yakuman as well but slightly easier to achieve.
From Chinese 大四喜 (dà sì xǐ), literally 'big four joys', referring to the four wind tiles in mahjong.