Bachelor, lusty, showing spirit (6)
I believe the answer is:
brandy
'spirit' is the definition.
(alcoholic spirit)
'bachelor lusty' is the wordplay.
'bachelor' becomes 'B' (abbreviation e.g. BA=Bachelor of Arts).
'lusty' becomes 'randy' (sexually aroused).
'b'+'randy'='BRANDY'
'showing' is the link.
(Other definitions for brandy that I've seen before include "Spirit from grapes" , "Strong spirit distilled from wine" , "Strong drink distilled from wine" , "Grape wine spirit" , "Samuel Johnson's drink fit for heroes" .)