Entertain man with drink (6)
I believe the answer is:
regale
'entertain' is the definition.
(thesaurus)
'man with drink' is the wordplay.
'man' becomes 'reg' (**).
'with' is a charade indicator (letters next to each other).
'drink' becomes 'ale' (ale is a kind of drink).
'reg'+'ale'='REGALE'
(Other definitions for regale that I've seen before include "Entertain royally" , "Entertain with stories" , "Feast, give pleasure to" , "Entertain with conversation" , "Supply copiously" .)