No sound heard in stable? (5)
I believe the answer is:
neigh
'heard in stable?' is the definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.
'no sound' is the wordplay.
'no' becomes 'nay' (archaic form 'no').
'sound' indicates a 'sounds like' (homophone) clue.
'nay' sounds like 'NEIGH'.
Can you help me to learn more?
(Other definitions for neigh that I've seen before include "Sound coming from Ben Nevis" , "nicker" , "Horse's noise" , "Equine utterance" , "Whicker" .)