Tweet from churchwarden? (4)
I believe the answer is:
pipe
This clue is a double definition.
'tweet' is the first definition.
(both can mean to make a high-pitched sound)
'churchwarden?' is the second definition.
(I've seen this before)
'from' is the link.
(Other definitions for pipe that I've seen before include "Whistle" , "Tube with bowl for smoking tobacco" , "Means of conveying" , "Something in the organ loft" , "It can be played or smoked" .)