Females dim as can be? (5)
I believe the answer is:
maids
'females' is the definition.
(maid is a kind of female)
'dim as can be?' is the wordplay.
'can be?' indicates anagramming the letters (I've seen 'can be' mean this).
'dim'+'as'='dimas'
'dimas' is an anagram of 'MAIDS'.
(Other definitions for maids that I've seen before include "Getting women in service" , "Female domestic servants" , "Female domestics" , "girls!" , "Lasses" .)