Beginning to moan about old former college game (8)
I believe the answer is:
monopoly
'game' is the definition.
(Monopoly is an example)
'beginning to moan about old former college' is the wordplay.
'beginning to' suggests taking the first letters.
'about' becomes 'on' (**).
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'former college' becomes 'poly' (polytechnic).
The initial letter of 'moan' is 'm'.
'm'+'on'+'o'+'poly'='MONOPOLY'
(Other definitions for monopoly that I've seen before include "Single-source supply" , "No competition" , "Market in which there are many buyers but only one seller" , "control of market" , "Position of having no competitors" .)