Heavy load carrier back from the yard (4)
I believe the answer is:
dray
'heavy load carrier back' is the definition.
I can't judge whether this definition defines the answer.
'from the yard' is the wordplay.
'from' indicates anagramming the letters (from the letters).
'yard' is an anagram of 'DRAY'.
Can you help me to learn more?
(Other definitions for dray that I've seen before include "delivery vehicle" , "Draught horse" , "Cart used for heavy loads" , "Cart without sides, for delivering barrels" , "Low truck" .)