Sir Joseph ___ , light bulb pioneer, d. 1914 (4)

I believe the answer is:

swan

(Other definitions for swan that I've seen before include "possibly mute" , "Cob - pen" , "Shakespeare is called The .... of Avon" , "Mute, whooper or Bewick's bird" , "Whooper or trumpeter?" .)

I've seen this clue in The Guardian.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.