Goodness, that's no good for women's power (8)
I believe the answer is:
strength
'power' is the definition.
(I know that strength is a type of power)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for strength that I've seen before include "In - means in large numbers" , "Beneficial attribute" , "Physical might, muscle" , "Concentration" , "Physical or mental capacity" .)