A buzzer that doesn't work (5)
I believe the answer is:
drone
'a buzzer that doesn't work' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'a buzzer' is the wordplay.
I cannot really understand how this works, but
'a' could be 'one' and 'one' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for drone that I've seen before include "Continuous low-pitched note" , "Talk boringly; male bee" , "Idle fellow" , "Continuous sound; bee" , "Monotonous sound - member of hive" .)