Man joined by a woman (5)
I believe the answer is:
erica
'woman' is the definition.
'man joined by a' is the wordplay.
'man' becomes 'eric' (I've seen this before).
'joined by' is a charade indicator (letters next to each other).
'eric'+'a'='ERICA'
(Other definitions for erica that I've seen before include "Heather's Latin name?" , "Shrubs" , "Plant of the heath genus" , "Moorland plant, girl's name" , "Plant genus of garden heather" .)