/sit"euhr/ , n.
1. a person who sits.
2. a brooding hen.
3. a person who stays with young children while the parents go out; baby-sitter.
4. a person who provides routine or custodial care temporarily or part-time, as for an elderly person or a pet whose owner is on vacation.
5. Slang. the buttocks; rump.
[ 1300-50; ME; see SIT 1 , -ER 1 ]