Singular actor headed season (6)
I believe the answer is:
summer
'season' is the definition.
(summer is a season)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for summer that I've seen before include "- - time (Gershwin)" , "Adder" , "could be described as Indian" , "'Now is the winter of our discontent / Made glorious ... by this sun of York' (Richard III)" , "'Oh, the ...time is comin', and the leaves are sweetly bloomin'' (song)" .)