主干 Traditional form: 主幹 Pinyin (reading): zhǔgàn Definitions: trunk main core Characters: 主 - to own; to host; master; host; lord 干 - arid, dry; to oppose; to offend; to invade Traditional characters: 主 - to own; to host; master; host; lord 幹 - arid, dry; to oppose; to offend; to invade