Weapons made of pine with knots attached (8)
I believe the answer is:
longbows
'weapons' is the definition.
(longbow is a kind of weapon)
'pine with knots attached' is the wordplay.
'pine with' becomes 'long' (to pine for something is to long for it. I am not sure about the 'with' bit.).
'knots' becomes 'bows' (bow is a kind of knot).
'attached' is a charade indicator (letters next to each other).
'long'+'bows'='LONGBOWS'
'made of' is the link.
Can you help me to learn more?
(Another definition for longbows that I've seen is " Powerful infantry weapons used against the French at Agincourt, 1415".)