Brother welcome among females (7)
I believe the answer is:
heavens
'brother' is the definition.
(both are exclamations)
'welcome among females' is the wordplay.
'welcome' becomes 'ave' (I've seen this before).
'among' is an insertion indicator.
'females' becomes 'hens' (hen is a kind of female).
'ave' placed into 'hens' is 'HEAVENS'.
(Other definitions for heavens that I've seen before include "Expression of surprise" , "Goodness" , "Exclamation (Good ____ !)" , "Gosh!" , "Places of supreme happiness" .)