Marty Feldman's role in "Young Frankenstein" (4)
I believe the answer is:
igor
'marty feldman's role in young frankenstein' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for igor that I've seen before include "Prince --, opera by Borodin" , "Card game" , "Prince of Russian opera" , "Maybe 8 [SIKORSKY]" , "-- Stravinsky, composer" .)