Achievement of female before lunch? (4)
I believe the answer is:
feat
'achievement' is the definition.
(feat is a kind of achievement)
'female before lunch?' is the wordplay.
'female' becomes 'f' (abbreviation).
'before' is a charade indicator (letters next to each other).
'lunch?' becomes 'eat' (to lunch can mean to eat lunch).
'f'+'eat'='FEAT'
'of' is the link.
(Other definitions for feat that I've seen before include "Achievement needing great courage or skill" , "Notable act" , "Great deed" , "Deed; achievement" , "An accomplishment of fate" .)