Bishop and Lord having good time spanning many years in club (8)
I believe the answer is:
bludgeon
'club' is the definition.
(both can mean a heavy weapon)
'bishop and lord having good time spanning many years' is the wordplay.
I cannot quite understand how this works, but
'bishop' could be 'b' (chess abbreviation) and 'b' is located in the answer.
'and' could be 'n' (common abbreviation for 'and') and 'n' is found within the answer.
'lord' could be 'lud' and 'lud' is found in the answer.
'good' could be 'g' (abbreviation) and 'g' is found in the answer.
The remaining letters 'eo' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'in' acts as a link.
Can you help me to learn more?
(Other definitions for bludgeon that I've seen before include "Club used maliciously" , "Cudgel" , "Thick stick with a heavy end" , "Thick stick as weapon" , "Blunt instrument" .)