大明槓だいみんかん

noun

turning a concealed pung into an open kong by calling another player's discard

Mahjong term. When a player has a concealed pung (three identical tiles) and another player discards the fourth identical tile, the player may call it to form an open kong (大明槓).

from Chinese dà míng gàng

See also: 槓

• 大だい明みん槓かんを宣せん言げんして、捨すて牌はいを取とった。

  I declared daiminkan and took the discarded tile.