A term primarily used on college campuses to descibe an area (usually a dorm room) that is safe for a person of any sexual orientation. Safe Space signs are small restangle pieces of cloth that are rainbow colored and have a blue square in the upper left corner with a yellow equal sign in it. The rainbow is used as a symbol of lesbian, gay, bisexual, and transgendered rights. The blue square with the yellow equal sign inside it represents equality.
My friend Jane has a Safe space sign on the door of her dorm room because she supports lesbian, gay, bisexual, and transgendered rights.