Definition of 'sitter'

Noun

1. Dutch astronomer who calculated the size of the universe and suggested that it is expanding (1872-1934)
      Synonyms: Willem de Sitter
2. an organism (person or animal) that sits
      Antonyms: stander
3. a person engaged to care for children when the parents are not home
      Synonyms: babysitter baby-sitter
4. a person who poses for a painter or sculptor
      Synonyms: artist's model
5. a domestic hen ready to brood
      Synonyms: brood hen broody broody hen setting hen

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