Silent entertainment in Miami mentioned (4)
I believe the answer is:
mime
'silent entertainment' is the definition.
(I've seen this before)
'in miami mentioned' is the wordplay.
'in' indicates a hidden word.
'MIME' can be found hidden inside 'miami mentioned'.
(Other definitions for mime that I've seen before include "Theatrical technique" , "Silent artform" , "Art of story-telling by body movements" , "Silent performer" , "Act without dialogue" .)