ツーイーソー

Japanese

For pronunciation and definitions of ツーイーソー – see the following entry.
字一色
[noun] (mahjong) all honours: a 役満 (yakuman, limit) hand that consists of only 風牌 (kazehai, wind tiles) and 三元牌 (sangenpai, dragon tiles)
(This term, ツーイーソー (tsūīsō), is the katakana spelling of the above term.)