Sentence:  Still there are some loop-holes out of which a man may creep, and dare to think and act for himself; but for a woman it is an herculean task, because she has difficulties peculiar to her <WSD>sex</WSD> to overcome, which require almost super-human powers. 
Meaning of the word marked with <WSD> tags:  Another category, especially of humans and especially based on sexuality or gender roles.