B1
a plastic or rubber object with metal pins, used to connect electrical equipment to an electricity supply
Dictionary examples:
My new plug glows in the dark. No more stubbed toes at night! (0.0)
I tried to charge my phone, but the plug was shaped like a banana! (0.0)
I bought a smart plug that tells jokes every time I use it. (0.0)
Is the plug in? (13.2)
If a plug is broken, it can be dangerous. (20.6)
a three-prong/two-prong plug (80.4)