proper noun/ʒɔ.kɔ̃d/
the Mona Lisa (a portrait painting by Leonardo da Vinci, widely considered to be the most famous painting in history); Mona Lisa (the subject of the painting, Lisa del Giocondo, née Gherardini (1479–1542))
“J’ai déjà vu La Joconde.” — I have already seen the Mona Lisa.
Calque of Italian la Gioconda using Middle French joconde, feminine of jocond, from Latin iūcundus.
proper noun/ʒɔ.kɔ̃d/
alternative form of Jocond; Giocondo (a character in Ludovico Ariosto's Orlando furioso); The protagonist of the eponymous tale by Jean de La Fontaine based on Canto XXVIII of Ludovico Ariosto's Orlando furioso.; The protagonist of the eponymous comedy by François-Pierre-Auguste Léger.; The protagonist of the eponymous opera by Nicolas Isouard.
Calque of Italian Giocondo, although the expected spelling is Jocond, after Middle French jocond.