sister

noun countable

UK /ˈsɪstə(r)/

Word Forms

singular	sister
plural	sisters

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
Brothers and sisters
bhai
bhuti
big
See alsohalf sister
See alsostepsister
2
Britisha female nurse in charge of a hospital ward (=a room for people who are ill in a hospital)
the day/night sister
Synonyms and related words
Types of nurse
charge nurse
district nurse
health visitor
1. 2a
  
  Sister
  Britishused for talking to a sister in a hospital
  My leg is still hurting me, Sister.
  Synonyms and related words
  Types of nurse
  charge nurse
  district nurse
  health visitor
3
a nun (=a woman who is a member of a religious community)
Synonyms and related words
Miscellaneous religions and their members
animism
ascetic
Baha’i
1. 3a
  
  Sister
  used in front of the first name of a nun, when talking to her or about her
  Sister Mary
  Synonyms and related words
  Miscellaneous religions and their members
  animism
  ascetic
  Baha’i
4
only before nounan organization or group that has close connections with another similar organization or group
Synonyms and related words
General words for organizations and institutions
structure
institution
bureau
5
used by African American women for talking to or referring to other African American women
Synonyms and related words
Names used for talking to women or girls
love
miss
babe
6
used by women for referring to a woman who they have strong feelings of loyalty and friendship towards
support for our sisters in the armed forces
Synonyms and related words
Names used for talking to someone in a friendly way
love
darling
mate
Synonyms and related words
Names used for talking to women or girls
love
miss
babe

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