noun

1. one leaf (of a book bound in Japanese style)
2. one block of tofu; one serving (in a restaurant)
3. one long and narrow thing (e.g. a gun, scissors, spade, hoe, inkstick, palanquin, candle, jinrikisha, shamisen, oar) (also written as 一挺, 一梃)
4. one chō (unit of distance, approx. 109.09 m)
5. one game; one task

adverb

6. well then; right (said when starting something)