1. noun /plʌɡ/
I pushed the plug back into the electrical socket and the lamp began to glow again.
Pull the plug out of the tub so it can drain.
2. verb /plʌɡ/
a) To stop with a plug; to make tight by stopping a hole.
He attempted to plug the leaks with some caulk.
b) To blatantly mention a particular product or service as if advertising it.
The main guest on the show just kept plugging his latest movie: it got so tiresome.
Wikipedia foundation.