Vehicle for performer after trailer ends (7)
I believe the answer is:
tractor
'vehicle' is the definition.
(tractor is a kind of vehicle)
'performer after trailer ends' is the wordplay.
'performer' becomes 'actor' (actor is a kind of performer**).
'after' says to put letters next to each other.
'ends' means to remove the middle letters.
'trailer' with its centre taken out is 'tr'.
'actor' put after 'tr' is 'TRACTOR'.
'for' is the link.
(Other definitions for tractor that I've seen before include "Farming vehicle" , "Vehicle for pulling farm machinery" , "Vehicle used on farms" , "Farm machine used for pulling" , "Vehicle for pulling others" .)