Divided group of women -- fifty granted entry (6)
I believe the answer is:
cloven
'divided' is the definition.
(similar in meaning)
'group of women fifty granted entry' is the wordplay.
'group of women' becomes 'coven' (group of witches).
'fifty' becomes 'L' (Roman numeral).
'granted entry' is an insertion indicator (inserted letters enter the word).
'coven' going around 'l' is 'CLOVEN'.
(Other definitions for cloven that I've seen before include "Cleft" , "Like cattle, Devil's, hoof" , "Kind of hoof that is divided" , "Split (like some hoofs)" , "(Of hooves) divided" .)