n4 Kanji
主 Kanji Meaning, Reading & Vocabulary | JLPT n4 | KanjiGym
主
Meaning : chief, lord, main thing, master, principal
Onyomi :
シュ, シュウ, ス
Kunyomi :
おも, ぬし
Examples:
ご主人(ごしゅじん)(hon.) your husband