(bound form) tree of heaven, referring to the deciduous tree 臭椿 chòu​chūn; its wood is brittle and often associated with worthlessness

(bound form) metaphorical for a person of no talent or a useless person; literally referring to worthless timber

A Chinese surname.

(bound form) used in the compound 樗蒲 chū​pú, an ancient gambling game similar to dice