plural of younger sister

Used other than figuratively or idiomatically: see younger, sister. (This entry is a translation hub.)

plural of elder sister

plural of step-sister

Alternative form of stepsister

(euphemistic, slang, derogatory) Sisterfucker.

plural of sister humper

plural of soul sister

plural of sister act

(slang) group sex involving two or more sisters (female siblings of each other) with one or more men.