Projectile that can pierce a vegetable miles away (5)

I believe the answer is:

arrow

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'projectile' is the definition.
(arrow is a kind of projectile)

I can't explain the rest of the clue.

(Other definitions for arrow that I've seen before include "Pointed projectile" , "Arm" , "Missile with a point" , "marker" , "one found near Bow?" .)

I've seen this clue in The Independent.

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