Hide from vet (6)
I believe the answer is:
screen
I believe this clue is a double definition.
'hide' is the first definition.
(thesaurus)
'vet' is the second definition.
(thesaurus)
'from' acts as a link.
(Other definitions for screen that I've seen before include "Sort out" , "Investigate (someone) for suitability; conceal" , "Conceal; test" , "Surface on which pictures are projected in cinemas" , "Hide - show - partition" .)