sister

Noun
  1. A female person who has the same parents as another person (synset 110622393)
    "my sister married a musician"
  2. (Roman Catholic Church) a title given to a nun (and used as a form of address) (synset 110621878)
    "the Sisters taught her to love God"
  3. A female person who is a fellow member of a sorority or labor union or other group (synset 110621666)
    "none of her sisters would betray her"

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