Liquor salesman who avoids all duties? (10)
I believe the answer is:
bootlegger
'liquor salesman who avoids all duties?' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
'liquor salesman who' is the wordplay.
'liquor' becomes 'bootleg' (I have seen 'Smuggle liquor ' mean 'bootleg' so perhaps 'liquor' could also mean 'bootleg').
'salesman who' becomes 'ger' (I am not sure about this - if you are sure you should believe this answer much more).
'bootleg'+'ger'='BOOTLEGGER'
Can you help me to learn more?
(Other definitions for bootlegger that I've seen before include "Distributor of illegal alcohol" , "pirate" , "Purveyor of illegal alcohol or recordings" , "One operating still" , "Criminal" .)