Terrible rebel let cat nick heated bed covering (8,7)
I believe the answer is:
electric blanket
'heated bed covering' is the definition.
I don't know anything about this answer so I cannot tell whether this works.
'terrible rebel let cat nick' is the wordplay.
'terrible' indicates an anagram.
'rebel'+'let'+'cat'+'nick'='rebelletcatnick'
'rebelletcatnick' is an anagram of 'ELECTRIC BLANKET'.
Can you help me to learn more?
(Other definitions for electric blanket that I've seen before include "Bed warmer" , "Bed heater" , "this might warm you up" , "cover at night" , "Provider of extra bed heat" .)