Understand about language expanding (8)
I believe the answer is:
dilating
'understand about' is the definition.
I can't tell whether this defines the answer.
'language expanding' is the wordplay.
I cannot quite understand how this works, but
'language' could be 'latin' (Latin is an example) and 'latin' is present in the answer.
The remaining letters 'dig' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for dilating that I've seen before include "Swelling out or enlarging" , "Swelling or expanding" , "Becoming expansive" , "Becoming wider" .)