1) Female homosexuality 2) Gayness 3) Homoeroticism 4) Homosexualism 5) Homosexuality 6) Sapphism 1) Sapphism 2) Tribadism 
• (n.) Unnatural sexual relations between women.
the quality or state of intense emotional and usually erotic attraction of a woman to another woman.
Homosexual activities or attachment between women.
Female homosexuality. Also called sapphism (after the lesbian poet sappho). ... (12 Dec 1998) ... 
(lez´be-әn-iz″әm) homosexuality between women.
Les'bi·an·ism noun (Medicine) Unnatural sexual relations between women. 
Type: Term Pronunciation: lez′bē-ăn-izm Definitions: 1. Homosexuality in women. Synonyms: sapphism
Lesbianism: Female homosexuality. Also called sapphism (after the lesbian poet Sappho).
[n] - female homosexuality
sapphism noun female homosexuality
Homosexuality (sexual attraction to one's own sex) between women, so called from the Greek island of Lesbos (now Lesvos), the home of Sappho the poet and her followers to whom the behaviour was attributed