Definitions:

1. A person engaged to care for children while the parents are not home. NOUN
   • She often works as a baby-sitter on weekends to earn extra money.
2. Refers to a person who takes care of someone else's child or children temporarily, often in the absence of the parents or guardians. NOUN
   • We found a reliable baby-sitter through a local agency.

Synonyms:

• au pair
• child minder
• governess
• nanny
• sitter