Definition of "plug"
noun:
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A pronged connecting device which fits into a mating socket.
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Any piece of wood, metal, or other substance used to stop or fill a hole; a stopple.
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A mention of a product (usually a book, film or play) in an interview, or an interview which features one or more of these.
from Wiktionary, Creative Commons Attribution/Share-Alike License
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verb:
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To stop with a plug; to make tight by stopping a hole.
from Wiktionary, Creative Commons Attribution/Share-Alike License -
To blatantly mention a particular product or service as if advertising it.
from Wiktionary, Creative Commons Attribution/Share-Alike License
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