lesbian

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A woman whose sexual orientation is to women.
• adjective Of, relating to, or being a lesbian.

from The Century Dictionary.

• Of or pertaining to the island of Lesbos in the Ægean sea, which belonged in ancient times, together with the adjoining part of the coast of Asia Minor, to the district called Æolis, and was the home of a famous school of lyric poets, including Alcæus, Sappho, and others.
• noun A native or an inhabitant of Lesbos.

from the GNU version of the Collaborative International Dictionary of English.

• noun a female homosexual.
• adjective Of or pertaining to the island anciently called Lesbos, now Mitylene, in the Grecian Archipelago.
• adjective archaic Amatory; erotic; -- in allusion to the reputed sensuality of the Lesbian people and literature.
• adjective homosexual; -- applied to female homosexuals.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective of a woman Homosexual; preferring female romantic or sexual partners.
• adjective Homosexual, specifically between two women.
• adjective Intended for lesbians.
• noun A homosexual female, a woman who is sexually or romantically attracted to other women.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a female homosexual
• noun a resident of Lesbos
• adjective of or relating to or characterized by homosexual relations between woman