Famous inventor (6)
I believe the answer is:
edison
'famous inventor' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for edison that I've seen before include "US inventor of over 1,000 devices" , "Thomas Alva -, US inventor" , "US scientist/inventor" , "The inventor is strangely onside" , "Prolific inventor" .)