(opposite of this meaning: pull out)
Definition: to insert one thing into another.
(This verb has more than one meaning)
E.g.1. She put the plug in, turned on the taps and waited for the bath to fill.
E.g.2. Everyone put a piece of paper with their name on it in a hat, and then someone pulled out the name of the winner.
E.g.3. He heard a gurgling noise and realised he had accidentally pulled the plug out of the bath.
This phrasal verb can be separated.