"The Big Bang Theory” role (3)
I believe the answer is:
raj
'the big bang theory role' 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 "Indian rule in India" , "The period of British rule in India" , "Jar this rule in India" , "British rule (in 19dn)" , "British dominion over India" .)