Woodwork in vehicle parking on arrival (9)
I believe the answer is:
carpentry
'woodwork' is the definition.
(synonyms)
'vehicle parking on arrival' is the wordplay.
'vehicle' becomes 'car' (car is a kind of vehicle).
'parking' becomes 'p' (abbreviation on road signs).
'on' says to put letters next to each other.
'arrival' becomes 'entry' (entry is a kind of arrival).
'car'+'p'+'entry'='CARPENTRY'
'in' acts as a link.
(Other definitions for carpentry that I've seen before include "The purpose of chips" , "Woodworking" , "Craft of a woodworker" , "Joining work" , "Trade" .)