Sister meaning

noun

1. a female person who has the same parents as another person

   “my sister married a musician”

   Synonymssis
   Oppositesbrother

2. (Roman Catholic Church) a title given to a nun (and used as a form of address)

   “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

   “none of her sisters would betray her”