Guess which word had this meaning.
1. Any code or set of principles containing different provisions for one group of people than for another, esp. an unwritten code of sexual behavior permitting men more freedom than women.
2. A set of principles permitting greater opportunity or liberty to one than to another, especially the granting of greater sexual freedom to men than to women.
3. A set of principles establishing different provisions for one group than another; also, specifically, allowing men more sexual freedom than women.