Crossword Genius

Botanical barb (5)

Ross

I believe the answer is:

thorn

'botanical barb' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for thorn that I've seen before include "Sharp point; runic character" , "Sharp point on plant" , "causing sharp irritation" , "Spiny bush" , "Feature of rose tree" .)

I've seen this clue in the Newsday.com and The Guardian.
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