門前清めんぜんちん

noun

concealed hand; not having called any tiles

In mahjong, a hand that has not called any tiles (pon, chi, kan) from other players; all tiles are self-drawn. Often a condition for certain yaku.

from Chinese mén qián qīng

• 門前清めんぜんちんでリーチをかける。

  Declare riichi with a concealed hand.

• この役やくは門前清めんぜんちんが条じょう件けんだ。

  This yaku requires a concealed hand.