Baby-sitter
Part of speech: noun
Definition: A person who cares for one or more babies or children for a short period of time in place of their legal guardians.
Sitter
Part of speech: noun
Definition: Someone who sits e.g. for a portrait.One employed to watch or tend something; the general form of babysitter, housesitter, petsitter, etc.A broody hen.A really easy scoring chance.