Short for 学習参考書 (gakushū sankōsho).

to recall, to remember / to learn / to memorize / to feel (an emotion or sense)

jagged, uneven / carrot, ginseng

(Chinese astronomy) the Three Stars constellation, one of the Twenty-Eight Mansions

a calling, coming / (Zen Buddhism) a gathering of Zen members in meditation, preaching, and invocation

go (for a specific purpose, for example) / Short for 参議院 (Sangiin): the House of Councillors (upper house of the Diet) / check, verify / add, increase, join (a group, etc.)

a surname / (Chinese astronomy, rare) the Three Stars constellation, one of the Twenty-Eight Mansions

(law) Financial form of 三 (san): 3, three

Short for 三河国 (Mikawa-no-kuni): Mikawa Province / Alternative spelling of 三 (san): 3, three

participate in / take part in / join / attend