Perlman of "Cheers” (4)
I believe the answer is:
rhea
'perlman of cheers' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for rhea that I've seen before include "New World flightless bird" , "Ostrich-like bird - satellite of Saturn" , "Fertility goddess in ancient Greek mythology" , "Titaness" , "Flightless bird - Greek fertility goddess" .)