Crossword Genius

Knowledge test (4)

Ross

I believe the answer is:

quiz

'knowledge test' is the definition.
(I've seen this before)

This is all the clue.

(Other definitions for quiz that I've seen before include "Test consisting of short questions" , "Distinctive smell" , "General knowledge test" , "Grill" , "Desert water" .)

I've seen this clue in The Telegraph, the Sydney Morning Herald, The Times and The Mirror.
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