Crossword Genius

Band at university reported icy spell (6-2)

Ross

I believe the answer is:

freeze-up

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'icy spell' is the definition.
(I've seen this before)

I don't understand the rest of the clue.

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(Other definitions for freeze-up that I've seen before include "Icy spell" , "Cold snap" , "Period of extreme cold" .)

I've seen this clue in The Independent.
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