Part of tackle in second game (5)
I believe the answer is:
spool
'part of tackle' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'second game' is the wordplay.
'second' becomes 's' (common abbreviation).
'game' becomes 'pool' (pool is a kind of game).
's'+'pool'='SPOOL'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for spool that I've seen before include "Bobbin, reel" , "Ribbon holder" , "Loops around with reel" , "Cylinder for winding film etc" , "On which film is wound" .)