someone who takes care of your baby or child while you are out, usually by coming to your home, especially someone you pay to do this

I promised the babysitter that we'd be home by midnight. 我向临时保姆保证，我们一定会在午夜前回家。

a person whose job is to take care of other people's children in her or his own home

I dropped the kids off at the babysitter's. 我把孩子们送到保姆家。