Primitive weapon — thin gloss (anag) (9)

I believe the answer is:

slingshot

(Other definitions for slingshot that I've seen before include "No slights (anag) - catapult (US)" , "fatal to Goliath" , "enough to knock you out" , "Weapon American kid may produce" , "Catapult -- thin gloss (anag)" .)

I've seen this clue in The Guardian.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.