sitter

Someone who sits, e.g. for a portrait.

The photograph caused a stir last week because it was shortlisted for the National Portrait Gallery’s prestigious Taylor Wessing prize, despite the rule that “all photographs must have been taken by the entrant from life and with a living sitter”. However realistic Erica may be, and to me she looks more like a sex doll than a real person, she was certainly not a living sitter.

One employed to watch or tend something; a babysitter, housesitter, petsitter, etc.

It's always such a pain to get a sitter on short notice.

Those domestic worries came through in pop-culture depictions of the sitter. In the midst of the 1960s sexual revolution, she was often portrayed as a temptress, seducing fathers when mom was away; in the ’70s, she started showing up in horror movies, trapped with a killer in the house and kids to protect[…]

A sitting room.

A participant in a séance.

"The sitters had better just take their own places," said the medium.

A broody hen.

A surname.

A river in north-east Switzerland, a tributary of the Thur.