(coll.) mother's sister; maternal aunt

mother's eldest sister (older than one's mother); (coll.) (euphemism) Aunt Flo (i.e. menstrual period)

(strictly speaking) sister of one's maternal grandmother; (more broadly) grandaunt; sister of one's mother's mother or mother's father; (Tw) (old) husband's maternal aunt

husband of mother's sister; uncle

(coll.) wife's younger sister; sister-in-law (term not used to directly address her)

mother's sister; maternal aunt

mother's sister; aunt

aunt (mother's eldest sister); (respectful term of address for a woman who is about the age of one's mother)

mother's sister's husband; husband of mother's sister

mother's sister's husband; husband of mother's sister

wife's younger sister; sister-in-law

wife's elder sister; sister-in-law

maternal aunt; father's concubine (old)

(dialect) wife; married woman

mother's youngest sister; wife's younger sister; sister-in-law

concubine

sister-in-law; wife's older sister

concubine

father's mother's sister (coll.); great aunt

(coll.) sanitary towel

mother's mother's sister; great-aunt

(neologism c. 2017) (slang) kindly, indulgent smile (usu. on the face of a woman)

distant relatives