Word Origin & History
1887, "Japanese girl whose profession is to sing and dance to entertain men;" hence, loosely, "prostitute," from Japanese, lit. "person accomplished in the social arts," from gei "art, performance" + sha "person." Cf. Athenian auletrides "flute-girls," female musicians who entertained guests at a symposium
with music at the start of the party and sex at the end of it.