1) A person's personal space; often used to describe when one's personal space is invaded.

2) Refers to the space in which people perform sexual activities; particularly activities pertaining to anal sex.

Goes out to my buddy iKrazy which demanded the second def

Referring to women who are sexually or romantically attracted to other women. Applies to both lesbians and bisexual women, as it is only the same-sex attraction that matters, not any other attractions the women may have.

Originates from the Greek poet Sappho, a bisexual woman from the Isle of Lesbos, from which we get the term lesbian.