Surrey without a fringe kept in dry tower (6)
I believe the answer is:
turret
'tower' is the definition.
(turret is a kind of tower)
'surrey without a fringe kept in dry' is the wordplay.
'without a fringe' indicates the central letters (the letters on the fringes or edges are removed).
'kept in' means one lot of letters goes inside another.
'dry' becomes 'tt' (abbreviation for teetotal).
The centre of 'surrey' is 'urre'.
'urre' placed into 'tt' is 'TURRET'.
(Other definitions for turret that I've seen before include "Tower-like projection on defensive wall" , "Small corner tower" , "Small tower on building or tank" , "Feature of tank" , "One of two rings" .)