Crossword Genius

Freezing bonus? (5)

Ross

I believe the answer is:

icing

I believe this is a double definition.

'freezing' is the first definition.
(I know that icing is a type of freezing)

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

(Other definitions for icing that I've seen before include "Concreted sugar" , "unwelcome on aircraft" , "Sweet thing" , "piece of cake?" , "Sugar-coating" .)

I've seen this clue in The Independent.
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