Bus driver on "The Simpsons” (4)
I believe the answer is:
otto
'bus driver on the simpsons' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for otto that I've seen before include "A man" , "Name of four German kings" , "Rose oil; man's name" , "fragrance comes from?" , "Something essential" .)