Webster's Revised Unabridged Dictionary · 1913

Lesbian

Lesbian (lez"bi*an) , adjective

1.
Of or pertaining to the island anciently called Lesbos, now Mitylene, in the Grecian Archipelago.
2.
Amatory; erotic; -- in allusion to the reputed sensuality of the Lesbian people and literature; as, Lesbian novels. [archaic]
3.
Homosexual; -- applied to female homosexuals.

Lesbian (lez"bi*an) , noun

A female homosexual.