The ayes have it (3)
I believe the answer is:
yes
'it' is the definition.
The definition suggests a singular noun which matches the answer.
'the ayes have' is the wordplay.
'YES' is hidden in amongst the letters.
But, I'm uncertain how this is indicated.
Can you help me to learn more?
(Other definitions for yes that I've seen before include "Confirmation" , "Word of agreement" , "Aye" , "Of course" , "Positive response" .)