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