sex

Sexual activity, especially sexual intercourse.

The sexual urge or instinct as it manifests itself in behavior.

Either of the two divisions, designated female and male, by which most organisms are classified on the basis of their reproductive organs and functions.

The fact or condition of existing in these two divisions, especially the collection of characteristics that distinguish female and male.

Females or males considered as a group.

One’s identity as either female or male.

The genitals.

To determine the sex of (an organism).