Frosty features in back room conservative institute (7)
I believe the answer is:
icecaps
'frosty features' is the definition.
I know that 'frosty' relates to this answer. I also know that both the answer and definition are plural nouns
'back room conservative institute' is the wordplay.
'back' shows that the letters should be reversed in order.
'room' becomes 'space' (I've seen this before).
'conservative' becomes 'C' (UK political abbreviation).
'institute' becomes 'i' (common abbreviation as in MIT).
'space'+'c'+'i'='spaceci'
'spaceci' in reverse letter order is 'ICECAPS'.
'in' is the link.
Can you help me to learn more?
(Other definitions for icecaps that I've seen before include "They cover Poles" , "Areas of permanent glaciation" , "Cold headgear, perhaps?" , "White sheets" , "Glacial areas" .)