Heard of one using tongue for strong drink? (6)
I believe the answer is:
liquor
'for strong drink?' is the definition.
(synonyms)
'heard of one using tongue' is the wordplay.
'heard of' shows a homophone (sound like).
'one using tongue' becomes 'licker' (someone licking with their tongue).
'licker' is a homophone of 'LIQUOR'.
(Other definitions for liquor that I've seen before include "Any alcoholic drink made from distillation" , "Strong alcoholic spirit" , "Any alcholic drink" , "Alcohol" , "Alcoholic drink, booze" .)