older sister and younger brother
sister-in-law (spouse's older sister or older brother's wife); older stepsister; older adopted sister; non-blood-related older sister
brothers and sisters; siblings
eldest sister; oldest sister
honorific suffix used after the name of a woman of equal or higher status
Sister (i.e. a nun; sometimes used as a posthumous suffix)
biological older sister; real elder sister
sisterly love; affection between sisters
threesome including two women who are sisters
Bengalese finch; society finch (Lonchura striata var. domestica)
women who have had sex with the same man; (lit.) pole sisters
half-sister (different father); half-sisters
sisters of the same mother; uterine sisters
pogo sisters; women who have had sex with the same man
companion (sister) volume (to); sequel (to)
you (feminine plural); you ladies
sister chromatid exchange
affiliated company; sister company
sister language; related language; cognate
sister group; sister taxon