also: ツーモー
drawing a tile from the wall
In mahjong, the act of drawing a tile from the wall during your turn. Often used in phrases like ツモる (to draw) or ツモ切り (discarding the drawn tile).
from Chinese zìmō
自分の番になったら、山から牌をツモる。
When it's your turn, you draw a tile from the wall.
winning off a self-drawn tile while completely concealed
Abbreviation of 門前清自摸和 (menzenchin tsumohō), a yaku (scoring combination) for winning on a self-drawn tile with a fully concealed hand (no open melds).
See also: 門前清自摸和
If you win by self-draw with a concealed hand, you get the menzenchin tsumohō yaku worth one han.
ロン is winning on another player's discarded tile, while ツモ is winning on a tile you draw yourself.
winning off a self-drawn tile
Standard katakana spelling for this mahjong term, reflecting its Chinese origin.
Ateji kanji form; rarely used in practice. The katakana spelling is overwhelmingly preferred.
Alternate reading reflecting a more direct approximation of the Chinese pronunciation. Not commonly used in Japanese mahjong contexts.
From Chinese 自摸 (zìmō), meaning 'self-draw'. Used in Japanese mahjong terminology.