树干 Traditional form: 樹幹 Pinyin (reading): shùgàn Definitions: tree trunk Characters: 树 - tree; to plant; to set up, to establish 干 - arid, dry; to oppose; to offend; to invade Traditional characters: 樹 - tree; to plant; to set up, to establish 幹 - arid, dry; to oppose; to offend; to invade