Man joins a woman (5)
I believe the answer is:
erica
'woman' is the definition.
'man joins a' is the wordplay.
'man' becomes 'eric' (I've seen this before).
'joins' is a charade indicator (letters next to each other).
'eric'+'a'='ERICA'
(Other definitions for erica that I've seen before include "I care about Heather, oddly" , "Heather's Latin name?" , "Moorland plant, girl's name" , "growing up on the moors" , "I care (anag) - plant - girl" .)