Crossword Genius

Colder than Coventry for those sent into isolation? (7)

Ross

I believe the answer is:

siberia

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

'isolation?' is the definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for siberia that I've seen before include "Cold spot" , "Arctic region" , "chosen by Putin for no-frills travel?" , "a place often very cold" , "Area of eastern Russia" .)

I've seen this clue in The Guardian.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.