Endlessly making claims over woman (7)
I believe the answer is:
nigella
'woman' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for nigella that I've seen before include "Woman" , "Flower and TV chef" , "plant" , "girl" , "Love-in-a-mist genus - celebrity cook" .)