Entertain
'entertain' is the definition.
(I know that amuse is a type of entertain)
This is the entire clue.
(Other definitions for amuse that I've seen before include "Keep someone entertained" , "Beguile" , "Tickle" , "Delight" , "Recreate" .)
'entertain' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for regale that I've seen before include "Entertain, delight" , "Amuse with stories" , "Entertain with stories" , "Supply copiously" , "Feed or entertain well" .)