Inventor of the telephone - or part of it (4)
I believe the answer is:
bell
'inventor of the telephone' is the definition.
(I've seen this in another clue)
'part of it' is the wordplay.
I cannot quite understand how this works, but
'part' could be 'ell' (ell is a kind of part) and 'ell' is present in the answer.
A single letter 'b' remains which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'or' acts as a link.
Can you help me to learn more?
(Other definitions for bell that I've seen before include "batsman Ian" , "He invented" , "kind of curve" , "Chime" , "Telephone call?" .)