Forbidding language in retweet about us (6,3)
I believe the answer is:
ruling out
'forbidding' is the definition.
Although both the answer and definition are present participle verbs, I don't understand how they can define each other.
'language in retweet about us' is the wordplay.
I cannot really see how this works, but
'language' could be 'lingo' (informal term for language) and 'lingo' is located in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for ruling out that I've seen before include "Making impossible" , "Dismissing" .)