自摸

自摸

1. (mahjong) to self-draw the winning tile
   • 2011, “問韓信”‎^[1]performed by 蔡秋鳳:

     不見發財紅中白板疊作伙　乎人海底槓頂自摸單調白皮 [Taiwanese Hokkien, trad.]
     不见发财红中白板叠作伙　乎人海底杠顶自摸单调白皮 [Taiwanese Hokkien, simp.]

     put-kiàn hoat-châi âng-tiong pe̍h-pán thia̍p chò-hóe, hō͘ lâng hái-té kàng-téng chū-bong tan-tiàu pe̍h-phôe [Pe̍h-ōe-jī]

     (please add an English translation of this quotation)

2. (slang) to masturbate; to touch oneself

• When playing mahjong, a player may say this word as a call for such a win.

• → Japanese: 自摸 (tsūmō → tsumo)

Shift from tsūmō (see Etymology 2 below).^[1]

Now the more-common reading, likely due to the rise of mahjong video games during the later half of the 20th century. (Can this⁽⁺⁾ etymology be sourced?)

• (Tokyo) ツモ [tsúꜜmò] (Atamadaka – [1])^[2]
• IPA^(key): [t͡sɨmo̞]

自(ツ)摸(モ) • (tsumo) 

1. (mahjong) self-drawing the winning tile; also, a call for such a win
2. (mahjong, colloquial) short for 門前清自摸和 (menzenchin tsumohō): a 役 (yaku, “winning hand”) of self-draw and all closed melds, worth 1 翻 (han, “double”)

• 自摸(ツモ)る (tsumoru)

From Mandarin 自摸 (zìmō).^[1][2][3]

• (Tokyo) ツーモー [tsúꜜùmòò] (Atamadaka – [1])^[2]
• IPA^(key): [t͡sɨːmo̞ː]

自(ツー)摸(モー) • (tsūmō) 

1. (mahjong) self-drawing the winning tile; also, a call for such a win

• 栄(ロン) (ron)
• 和了(あがり) (agari)
• 門(メン)前(ゼン)聴(テン)牌(パイ) (menzen tenpai)