Which rights are included under "women's rights" has varied through time and across cultures. Even today, there is some disagreement about what constitute women's rights. Does a woman have a right to control family size? to equality of treatment in the workplace? to equality of access to military assignments?
Usually, "women's rights" refers to whether women have equality with the rights of men where women and men's capacities are the same.
Sometimes, "women's rights" includes protection of women where women are subject to special circumstances (such as maternity leave for child-bearing) or more susceptible to mistreatment (traffic in women, rape).
In more recent history, we can look at specific documents to see what were considered "women's rights" at those points in history. Although the concept of "rights" is itself a product of the Enlightenment era, we can look at various societies in the ancient, classical and medieval worlds, to see how women's actual rights, even if not defined by that term or concept, differed from culture to culture.
UNITED NATIONS CONVENTION ON RIGHTS OF WOMEN - 1981
The 1981 Convention on the Elimination of All Forms of Discrimination Against Women, signed by many United Nations member states (notably not Iran, Somalia, the Vatican City and the United States and a few others), defines discrimination in a way that implies that women's rights are in "political, economic, social, cultural, civil" and other spheres.
Any distinction, exclusion or restriction made on the basis of sex which has the effect or purpose of impairing or nullifying the recognition, enjoyment or exercise by women, irrespective of their marital status, on a basis of equality of men and women, of human rights and fundamental freedoms in the political, economic, social, cultural, civil or any other field.