Hat found in safe zone (3)
I believe the answer is:
fez
'hat' is the definition.
(fez is a kind of hat)
'in safe zone' is the wordplay.
'in' indicates a hidden word.
'FEZ' can be found hidden inside 'safe zone'.
'found' is the link.
(Other definitions for fez that I've seen before include "Brimless conical cap" , "Felt hat" , "Eastern felt cap with a tassel" , "Flat-topped red cap with tassel worn by Muslim men" , "Old Turkish hat" .)