Crossword Genius

Weapon that might give fawning fellow backache? (7)

Ross

I believe the answer is:

longbow

I'm a little stuck... Click here to teach me more about this clue!

'weapon' is the definition.
(I know that Longbow is a bow)

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for longbow that I've seen before include "Mediaeval weapon" , "Weapon shooting arrows" , "Archer's weapon" , "Ancient weapon" , "Medieval weapon" .)

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