The Parisian leaving object in lorry (5)
I believe the answer is:
artic
'lorry' is the definition.
(articulated lorry is a semi-trailer truck)
'the parisian leaving object' is the wordplay.
'the parisian' becomes 'le' (definite article in French).
'leaving' indicates named letters should be taken away.
'object' becomes 'article'.
'article' with 'le' taken out is 'ARTIC'.
'in' is the link.
(Other definitions for artic that I've seen before include "Large vehicle" , "Polar region" , "rig" , "Large lorry" , "Heavy transporter" .)