Transport in basic arsenal (4)
I believe the answer is:
cars
'transport' is the definition.
Although both the answer and definition are nouns, they are not in the same form of the noun.
'in basic arsenal' is the wordplay.
'in' indicates the answer is hidden within the clue.
'CARS' is hidden within 'basic arsenal'.
Can you help me to learn more?
(Other definitions for cars that I've seen before include "Private vehicles" , "Automobiles" , "... when these may be driven?" , "Motor vehicles" .)