gender — as in: gender discrimination
Gender roles were more defined when my grandmother was growing up.
all the members of one sex (male or female)
or: the state of being either male or female
or (recently and especially with regard to self-identification): the state of being male, female, transsexual, or any of many other categories
Less commonly, gender can refer to a grammatical categories. In some languages (not modern English), nouns that are not distinguishable by biological sex, can still have a feminine or masculine gender.