Caught one using tongue to taste spirit (6)
I believe the answer is:
liquor
'spirit' is the definition.
(I know that spirit can be written as liquor)
'caught one using tongue to taste' is the wordplay.
'caught' shows a homophone (sound like) (heard).
'one using tongue to taste' becomes 'licker' (someone licking something).
'licker' is a homophone of 'LIQUOR'.
(Other definitions for liquor that I've seen before include "Alcoholic spirits" , "'Hard' drink" , "Any distilled drink" , "Alcoholic drink in general" , "Any alcholic drink" .)