Combating bad stuff spreading online dealing with Covid? (9)

I believe the answer is:

wrestling

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

'combating' is the definition.
(wrestling is a kind of combating)

I don't understand the remainder of the clue.

(Other definitions for wrestling that I've seen before include "event" , "Ring fighting" , "Ring sport" , "Combat in ring" , "See 8" .)

I've seen this clue in The Telegraph.

Want a hint initially instead of a full solution? Install my app