"Better Call Saul" actress Seehorn (4)
I believe the answer is:
rhea
'better call saul actress seehorn' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for rhea that I've seen before include "S American runner" , "Greek goddess of fertility - running bird" , "Large S. American bird" , "It can't fly" , "South American flightless bird - mother of Zeus" .)