noun (n)

• a female person who has the same parents as another person(noun.person)

  Example:
  My sister married a musician.
  

  Synonym:
  sister
  Antonym:
  blood brother, brother
  

  source: wordnet30
• A colloquial abbreviation of Sister.(noun)

  source: webster1913
• Six. See Sise.(noun)

  source: webster1913