Safety devices a fathead employs? (5)
I believe the answer is:
fuses
'safety devices' is the definition.
'fuses' can be an answer for 'devices' (fuse is a kind of device). I am not sure about the 'safety' bit.
'a fathead employs?' is the wordplay.
'a fathead' becomes 'f' (head letter of 'fat').
'employs?' becomes 'uses' ('use' can be a synonym of 'employ'**).
'f'+'uses'='FUSES'
Can you help me to learn more?
(Other definitions for fuses that I've seen before include "Blends or amalgamates, say metals" , "Blends together as with heat" , "Welds together using heat" , "bonds" , "Blow one of these and lose your temper" .)