一本， １本， いっぽん
1. one long cylindrical thing, one film, TV show, etc., one goal, home run, etc., one telephone call
2. one version
3. one book, a certain book
4. ippon, one point, a blow
5. geisha
6. single-minded focus on ...
一个长圆柱体，一部电影、电视剧等，一个进球、本垒打等，一个电话