Fire or trick standard allowance (13)
I believe the answer is:
conflagration
'fire' is the definition.
(conflagration is a kind of fire)
'trick standard allowance' is the wordplay.
'trick' becomes 'con' (a con is a fraud or trick).
'standard' becomes 'flag' (standard is a type of flag).
'allowance' becomes 'ration' (I've seen this before).
'con'+'flag'+'ration'='CONFLAGRATION'
'or' acts as a link.
(Other definitions for conflagration that I've seen before include "Great fire" , "Inferno" , "Large destructive fire" , "result of arson" , "Big blaze" .)