Crossword Genius

It's cooler in Alaska, maybe (12)

Ross

I believe the answer is:

refrigerator

I'm a little stuck... Click here to teach me more about this clue!

'it's cooler' is the definition.
(I've seen this before)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for refrigerator that I've seen before include "Chilled compartment" , "Chilling appliance" , "Icebox" , "Chamber maintaining low internal temperature" , "Cooler" .)

I've seen this clue in The Telegraph.
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