Every brazen hussy has one (3)
I believe the answer is:
bra
'every brazen hussy' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.
'has one' is the wordplay.
'has' becomes 'br' (I can't justify this - if you can you should believe this answer much more).
'one' becomes 'a' (a thing is one thing).
'br'+'a'='BRA'
Can you help me to learn more?
(Other definitions for bra that I've seen before include "I give a couple a lift" , "Underwear item" , "Female undergarment" , "support" , "one carrying chest" .)