Used other than figuratively or idiomatically: see 一 and 本 (one thing) / Short for 一本勝ち (ippon-gachi, “winning in one blow”).

solely / only, simply / alone, automatically, by itself, naturally

a female given name

a male given name

step; pace

one (of anything) / a, an

one (of anything) / a, an

one time / one round; one bout

(mahjong) Alternative spelling of 一萬 (“the tile of 1 wan”)

A million quintillion, 10³⁶, or a sextillion of dated British or Australian English, in modern Japanese since 17th century.