† PlaˈtonneObs.nonce-wd. [Formed as a F. fem. of Platon Plato: cf.baron, baronne.] lit. A female Plato: in quot. a female adherent of the doctrine of Platonic affection. 1709Swift TatlerNo. 32 ⁋2, I am fallen desperately in Love with a profess'd Platonne, the most unaccountable Creature of her Sex.