double west pung/kong when west is both round and seat wind
Mahjong term: a meld of west tiles that scores extra because west is both the prevailing wind and the player's seat wind. Often called 'double west'.
from Chinese
See also: 連風牌
He called a double west pung and quickly increased his score.
From ダブ (double) + 西 (west), a mahjong term for a double wind meld involving the west tile.