Drinkers here prepared big lunch, scoffing tons (9)
I believe the answer is:
nightclub
'drinkers here' is the definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.
'prepared big lunch scoffing tons' is the wordplay.
'prepared' indicates anagramming the letters.
'scoffing' indicates putting letters inside.
'tons' becomes 't'.
'big'+'lunch'='biglunch'
'biglunch' with letters rearranged gives 'nighclub'.
'nighclub' enclosing 't' is 'NIGHTCLUB'.
Can you help me to learn more?
(Other definitions for nightclub that I've seen before include "Venue for late shows" , "Haunt" , "Where one might have room to swing" , "cabaret" , "one of the high spots" .)