HGV for business (5)
I believe the answer is:
truck
'for business' is the definition.
(dealings, as in 'having no truck with' something)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for truck that I've seen before include "Exchange" , "trolley" , "Goods vehicle" , "See 14" , "Lorry - wagon" .)