Turret tugger (5)
I believe the answer is:
tower
I believe this clue is a double definition.
'turret' is the first definition.
(I've seen this before)
'tugger' is the second definition.
(something that tows or tugs things)
(Other definitions for tower that I've seen before include "Steeple" , "One drawing" , "famous prison" , "Monument" , "Tall feature of Blackpool" .)