Etymology

ippatsu

I1P3P3A1T1S1U1

Today it means: A yaku awarded for winning before the end of the player's next turn after declaring riichi Full definition →

Japanese 一発
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The story

  1. Japanese · borrowed from一発
  2. English todayippatsu

From Japanese 一発 (ippatsu).

Etymology from Wiktionary, CC BY-SA 4.0.