sit for
verb1
To take care of children in the absence of their parents; to work as a babysitter for someone.
2
To serve as a model for an artist or as the subject of a piece of art.
- He sat for painters.1927, Joseph Auslander, Frank Ernest Hill, Theresa West Elmendorf, The Winged Horse, page 220:
3
To represent a political party in a place, especially the House of Lords.
- Previously a crossbench peer in the House of Lords, now he sits for Labour.2025 February 19, Dickon Ross, “Opinion”, in RAIL, number 1029, page 3: