V&A not initially getting vehicle (3)
I believe the answer is:
van
'vehicle' is the definition.
(type of vehicle)
'va not initially getting' is the wordplay.
'initially' says to take the initial letters.
'getting' means one lot of letters go next to another.
The initial letter of 'not' is 'n'.
'va'+'n'='VAN'
(Other definitions for van that I've seen before include "Forefront, vehicle" , "Light vehicle" , "Goods vehicle" , "Truck with an enclosed cargo space" , "Commercial vehicle or front of army" .)