加槓かかん

noun, noun or participle which takes 'suru'

forming a kong by adding a drawn tile to a declared pung

A specific mahjong term: after declaring a pung (three identical tiles), you draw the fourth identical tile from the wall and add it to make a kong. This is one of the ways to form a kong.

from Chinese jiā gàng

See also: 槓

• 加か槓かんすると、槓かんドラがめくれる。

  When you form a kong by adding a drawn tile, the kong dora indicator is flipped.

• ポンした牌はいと同おなじ牌はいをツモったら加か槓かんできる。

  If you draw the same tile as one you already have a pung of, you can add it to make a kong.