Buzz from live lines (4)
I believe the answer is:
bell
'buzz' is the definition.
(I've seen this before)
'live lines' is the wordplay.
'live' becomes 'be' (synonyms).
'lines' becomes 'll' (I've seen this in other clues).
'be'+'ll'='BELL'
'from' is the link.
(Other definitions for bell that I've seen before include "Inventor - clanger" , "It makes a ringing sound when hit with a clapper" , "Wide end of a trumpet" , "The frigate Lutine's hangs in Lloyd's of London" , "kind of curve" .)