Professional drinker abused ten waiters (4,6)
I believe the answer is:
wine taster
'professional drinker' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.
'abused ten waiters' is the wordplay.
'abused' indicates anagramming the letters.
'ten'+'waiters'='tenwaiters'
'tenwaiters' is an anagram of 'WINE TASTER'.
Can you help me to learn more?
(Other definitions for wine taster that I've seen before include "Drinks sampler" , "Person with refined palate" , "judge turning to drink" , "Person presented bouquets, perhaps" .)