Heads off to find cover (5)
I believe the answer is:
shade
'cover' is the definition.
(thesaurus)
'heads off' is the wordplay.
'off' indicates anagramming the letters.
'heads' anagrammed gives 'SHADE'.
'to find' is the link.
(Other definitions for shade that I've seen before include "remains" , "Colour; slight amount" , "Area sheltered from the sun" , "Tint; ghost" , "See 15" .)