Occasion of towering language difficulties! (5)

I believe the answer is:

babel

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

'occasion of towering language difficulties' is the definition.
The answer and definition can be both states of affairs as well as being singular nouns.
Maybe they are linked in a way I don't understand?

This is the entire clue.

Can you help me to learn more?

(Other definitions for babel that I've seen before include "Biblical tower location" , "pandemonium" , "Unfinished tower" , "hullabaloo" , "Commotion" .)

I've seen this clue in the Evening Standard.

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