intransitive verb
Definition: To become blocked or obstructed, often referring to a passage or opening.
Example: The sink plugged after I washed the dishes.
noun
Definition: A small object that is used to fill a hole or opening, often to stop something from leaking or to connect electrical devices.
Example: He used a plug to seal the hole in the wall.
transitive verb
Definition: To insert something into a hole or opening to fill it, or to stop it up; also, to promote something, like a product or a book, by mentioning it in a public setting.
Example: The author plugged her new book during the interview.