Terrible place in the shade, possibly (5)
I believe the answer is:
hades
'terrible place' is the definition.
'shade possibly' is the wordplay.
'possibly' is an anagram indicator.
'shade' anagrammed gives 'HADES'.
'in the' is the link.
(Other definitions for hades that I've seen before include "Classic hell in the shade" , "Greek god of the underworld" , "In Greek myth, the Underworld" , "Pluto" , "Underworld, hell" .)