Crossword Genius

A cold house (5)

Ross

I believe the answer is:

igloo

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

This might be a double definition.

'a cold' is the first definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.

'house' is the second definition.
(I've seen this before)

Can you help me to learn more?

(Other definitions for igloo that I've seen before include "Inuit abode" , "From domed hut" , "Innuit dwelling" , "home in the cold" , "Inuit residence" .)

I've seen this clue in the Evening Standard.
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