erotic [M17th] French gave us erotic, although the ultimate source was Greek erōs ‘love’, the name of the Greek god of love, the son of Aphrodite and the equivalent of the Roman Cupid who gets his name for the Latin for ‘desire’, the source of cupidity [LME]. He is usually pictured as a naked boy with wings, carrying a bow and arrow to wound his victims with the pains of love. Erogenous [L19th] comes from the same source.