Call at home (4)
I believe the answer is:
safe
'call at home' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for safe that I've seen before include "Metal box for storing valuables in" , "Free from risk" , "Free from harm" , "Strong metal box to store valuables" , "Secure - place in the bank" .)