Use aria about a lot of land (7)
I believe the answer is:
eurasia
'land' is the definition.
(Eurasia is an example)
'use aria about' is the wordplay.
'about' indicates anagramming the letters.
'use'+'aria'='usearia'
'usearia' anagrammed gives 'EURASIA'.
'a lot of' is the link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for eurasia that I've seen before include "Germany and Japan are in it" , "combination of continents" , "Landmass extending from Cape Roca in the west to Cape Dezhnev in the east" , "Two continents considered as one" , "Large northern hemisphere land mass" .)