Secure — TV presenter (6)
I believe the answer is:
anchor
I believe this clue is a double definition.
'secure' is the first definition.
(I've seen this before)
'tv presenter' is the second definition.
(I've seen this before)
(Other definitions for anchor that I've seen before include "TV journalist" , "One holding firmly in place" , "Device for keeping ship in place" , "TV presenter" , "Device used to prevent vessel from drifting" .)