Deprived female lost cap (5)
I believe the answer is:
beret
'cap' is the definition.
(beret is a kind of cap)
'deprived female lost' is the wordplay.
'deprived' becomes 'bereft' (I've seen this before).
'female' becomes 'f' (abbreviation).
'lost' suggests deleting specific letters.
'bereft' with 'f' taken out is 'BERET'.
(Other definitions for beret that I've seen before include "item of headwear" , "Round flattish cap" , "Basque headgear" , "French-style hat" , "Soft brimless cap" .)