Koothrappali on "The Big Bang Theory" (3)
I believe the answer is:
raj
'koothrappali on the big bang theory' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for raj that I've seen before include "The period of British rule in India" , "Indian government" , "Sovereignty" , "British dominion over India" , "Jar (anag.)" .)