Weapon gives angry bishop pained expression (8)
I believe the answer is:
crossbow
'weapon' is the definition.
(crossbow is a kind of weapon)
'angry bishop pained expression' is the wordplay.
'angry' becomes 'cross' (cross can mean annoyed or angry).
'bishop' becomes 'B' (abbreviation for bishop in chess).
'pained expression' becomes 'ow' (expression of pain).
'cross'+'b'+'ow'='CROSSBOW'
'gives' is the link.
(Other definitions for crossbow that I've seen before include "Weapon firing bolts" , "Weapon for shooting bolts" , "Old weapon with mechanism for firing arrow" , "Missile-launcher" , "Old weapon wiht mechanism for firing bolt" .)