Crossword Genius

Most of French paper's yellow (5)

Ross

I believe the answer is:

lemon

'yellow' is the definition.
(lemon is a kind of yellow)

I don't understand how the remainder of the clue works.

(Other definitions for lemon that I've seen before include "stinker" , "Pulsate" , "Yellow citrus fruit with acid taste" , "Tone" , "Shade of yellow - fruit" .)

I've seen this clue in The Guardian.
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