They carry heavy burdens in many ways (7)
I believe the answer is:
lorries
'they' is the definition.
Both the answer and definition are plural nouns.
Perhaps there's an association between them I don't understand?
'carry heavy burdens in many ways' is the wordplay.
I cannot quite see how this works, but
'many' could be 'l' and 'l' is located in the answer.
'ways' could be 'es' (east and south - two directions) and 'es' is found within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for lorries that I've seen before include "Large transport vehicles" , "Trucks without sides" , "Vehicles for transporting goods" , "Truck with no sides" , "HGVs" .)