Sister

n. [O. Eng. suster; sustre, sostre, A-S. sweostor, sweoster, swyster, swuster, suster, L. Ger. süster, suster, D. zuster, Icel. systir, systur, systr, Sw. syster, Dan. söster, Goth. swistar, O. Sax. suestar, O. Fries. swester, suster, O. H. Ger. swestar, N. H. Ger. schwester, Russ. sestrā, Pol. siostra, Skr. swasri, Lat. soror.] 1. A female whose parents are the same as those of another person;—the correlative of brother. I am the sister of one Claudio. Shak.

2. A female who is closely allied to, or associated with, another person, as in the same faith, society, and the like.
3. One of the same kind, or of the same condition; as, sister fruits.