sister Meaning, Definition & Usage

  1. noun a female person who has the same parents as another person
    sis.
    • my sister married a musician
  2. noun (Roman Catholic Church) a title given to a nun (and used as a form of address)
    • the Sisters taught her to love God
  3. noun a female person who is a fellow member of a sorority or labor union or other group
    • none of her sisters would betray her
  4. noun (slang) sometimes used as a term of address for attractive young women
    baby; babe.

WordNet

Sis"ter noun
Etymology
OE. sister, fr. Icel. systir; also suster, from AS. sweostor, sweoster, swuster, akin to OFries. sweester, suster, LG. süster, suster, D. zuster, OS. & OHG. swestar, G. schwester, Icel. systir, Sw. syster, Dan. söster, Goth. swistar, Lith. ses, Russ. sestra, Pol. siostra, L. soror, Skr. svasr. Cf. Cousin.
Definitions
  1. A female who has the same parents with another person, or who has one of them only. In the latter case, she is more definitely called a half sister. The correlative of brother.
    I am the sister of one Claudio. Shak.
  2. A woman who is closely allied to, or assocciated with, another person, as in the sdame faith, society, order, or community. James ii. 15.
  3. One of the same kind, or of the same condition; -- generally used adjectively; as, sister fruits. Pope.
Sis"ter transitive verb
Definitions
  1. To be sister to; to resemble closely. Obs. Shak.

Webster 1913