City entertained by actor on tour (7)
I believe the answer is:
toronto
'city' is the definition.
(Toronto is an example)
'entertained by actor on tour' is the wordplay.
'entertained by' says the answer is hidden in the clue (the clue hosts or entertains the answer).
'TORONTO' can be found hidden inside 'actor on tour'.
(Other definitions for toronto that I've seen before include "Canada's largest city" , "Largest city in Canada" , "major city" , "place on Lake Ontario" , "Transatlantic city" .)