Crossword Genius

An indication of cold perhaps (6)

Ross

I believe the answer is:

sneeze

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'an indication' is the definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.

I can't explain the remainder of the clue.

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(Other definitions for sneeze that I've seen before include "Act of sternutation" , "Symptom of cold" , "Nasal eruption from common cold" , "React to irritation" , "Precursor to "bless you"" .)

I've seen this clue in The Globe and Mail.
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