1. A person engaged to care for children when the parents are not home
   "The teenagers in the neighbourhood often worked as baby-sitters";
   - babysitter, baby-sitter, childminder [Brit]
    
2. A person who poses for a painter or sculptor
   "The sitter held the pose for hours during the painting session";
   - artist's model
    
3. An organism (person or animal) that sits
   "The patient sitter remained motionless for hours while the artist painted her portrait"
    
4. A domestic hen ready to brood
   "The farmer noticed that the sitter hen was fiercely protective of her nest";
   - brood hen, broody, broody hen, setting hen

1. Dutch astronomer who calculated the size of the universe and suggested that it is expanding (1872-1934)
   - Willem de Sitter

Derived forms: sitters

Type of: astronomer, being, biddy, hen, keeper, model, organism, poser, stargazer [informal], uranologist

Antonym: stander

Encyclopedia: Sitter