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sister - definition and synonyms


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noun [countable] sister pronunciation in American English /ˈsɪstər/
Word Forms
  1. 1
    a daughter of your parents. A son of your parents is called your brother
    He has two brothers and two sisters.
    big/little sister (=an older or younger sister): She has to babysit for her little sister tonight.
    Synonyms and related words
  2. 6
    British a female nurse in charge of a hospital ward (=a room for people who are sick in a hospital)
    the day/night sister
    Synonyms and related words
    1. a.


      British used for talking to a sister in a hospital
      My leg is still hurting me, Sister.
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… a feeling of pleasure you get from spending time doing what you want and not worrying about what other people are doing or saying

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