一発屋 いっぱつや Meanings Noun one-hit wonder; flash in the pan all-or-nothing gambler; one-shot speculator; someone who puts all one's eggs in one basket slugger; home-run batter Kanji 一 one. Read as イチ. 発 emit. Read as ハツ. 屋 shop. Read as や. Jinuma: Japanese Dictionary · Word lists