plug

To connect an electrical appliance to a power supply.

"Plug in the kettle, please."

To promote or advertise something, often repeatedly and enthusiastically.

"The band plugged their new album."

A device with pins for connecting electrical appliances to a power supply.

"He put the plug into the socket."

A piece of material used to block a hole or opening, such as in a bath.

"The bath plug was missing."