Bristle on a cereal plant (3)

I believe the answer is:

awn

(Other definitions for awn that I've seen before include "Bristle on cereal spike" , "Bristles" , "Bristle-like appendage on grass" , "Bristly head of barley sheath, quite wan" , "Bristle on grass spikelet" .)

I've seen this clue in The Independent.

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