A stopper you might hear on a chat show (4)

I believe the answer is:

plug

I'm a little stuck... Click here to teach me more about this clue!

'a stopper' is the definition.
(I know that stopper can be written as plug)

I don't understand the rest of the clue.

(Other definitions for plug that I've seen before include "See 19" , "Fitment at the end of a flex" , "Promote" , "Stopper - advert" , "Spigot" .)

I've seen this clue in The Irish Independent.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.