Have conversation about item thrown at the back of the class (7)

I believe the answer is:

discuss

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

'have' is the definition.
The definition and answer can be both to do with communicating as well as being verbs in their base form.
Maybe there's a link between them I don't understand?

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for discuss that I've seen before include "Talk about (something)" , "Confer" , "Verbally T [TREAT]" , "Consider" , "Take up" .)

I've seen this clue in The Irish Times.

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.