TV "Science Guy” Bill (3)
I believe the answer is:
nye
'tv science guy bill' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for nye that I've seen before include "-- Bevan, NHS founder" , "So-called government minister" , "- Bevan, former Labour politician" , "- - Bevan (NHS pioneer)" , "Pheasant's nest" .)