Line often connected to the buzzer (3)
I believe the answer is:
bee
'buzzer' is the definition.
(insect which buzzes)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for bee that I've seen before include "Creator of honey" , "Honey generator" , "Apian insect" , "See 17" , "Social insect" .)