atamahane; head bump rule
A mahjong house rule: when multiple players declare a win on the same discard, the player closest in turn order to the discarder wins. The term literally means 'head jump' or 'head bump', reflecting the idea of jumping ahead of others.
This mahjong parlor uses the atamahane rule.
Because of the head bump rule, if the player before me declares ron, I can't win.
Most common spelling in mahjong contexts; uses katakana for the second part.
Hiragana variant, also seen.
Kanji spelling using 跳ね; less common but valid.
A mahjong term formed from 頭 and ハネ, from 撥ねる “to exclude.” When several players declare a win on one discard, only the player nearest the discarder in turn order receives it.