A woman who is simultaneously sister and wife to her husband. / In a polygamous marriage, a woman who is simultaneously the sister and co-wife of another. / A co-wife in general.

A half sister having the same mother but a different father; a maternal half sister.

(Bangladesh, India, Pakistan) A female first cousin.

Alternative spelling of cousin sister

(chiefly India) plural of cousin sister

(nonstandard) plural of sister-in-law

A female sibling sharing a single parent.

Alternative spelling of half sister

Synonym of younger sister

A sibling's older sister (used especially by children or by parents in speaking to their children).