Tradie’s vehicle - only contents include silicon tool (7)
I believe the answer is:
utensil
'tool' is the definition.
(I know that utensil is a type of tool)
'tradie's vehicle only contents include silicon' is the wordplay.
I cannot really understand how this works, but
'vehicle' could be 'ute' (Australian abbreviation for utility vehicle) and 'ute' is located in the answer.
'silicon' could be 'si' (chemical symbol) and 'si' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for utensil that I've seen before include "Item, eg for kitchen" , "Mandolin, perhaps" , "Implement, maybe in kitchen" , "A kitchen pot or pan" , "vessel" .)