Sort of party you could have in Southend (3)
I believe the answer is:
hen
'sort of party' is the definition.
'you could have in southend' is the wordplay.
'HEN' is hidden within the letters.
But, I am uncertain how this is indicated.
Can you help me to learn more?
(Other definitions for hen that I've seen before include "Composed of women" , "Source of eggs" , "Female bird" , "Clucking female" , "This party is for women only" .)