In the darkness, caught in a female's embrace (6)
I believe the answer is:
shadow
'in the darkness caught' is the definition.
I can't judge whether this definition defines the answer.
'in a female's embrace' is the wordplay.
'in' means one lot of letters goes inside another.
'a female' becomes 'sow' (female pig).
'embrace' becomes 'had' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'sow' enclosing 'had' is 'SHADOW'.
Can you help me to learn more?
(Other definitions for shadow that I've seen before include "Dark area, weak remnant (of something)" , "Follow; partial darkness" , "Follow secretly; obscure" , "Unilluminated area" , "Dark shape (on the Opposition front bench?)" .)