大姨 Traditional form: 大姨 Pinyin (reading): dàyí Definitions: aunt (mother's eldest sister) (respectful term of address for a woman who is about the age of one's mother) Characters: 大 - big, great, vast, high, deep 姨 - aunt, mother's sister Traditional characters: 大 - big, great, vast, high, deep 姨 - aunt, mother's sister