radicchio /ɹəˈdi.kjoʊ/ noun1 •A cultivar of chicory (Cichorium intybus var. foliosum) with red leaves and a slightly bitter taste, eaten as a salad vegetable or grilled.In memory, all the food they brought us first was red: the bresaola, the fat tongues of roasted peppers laid on goat's cheese, the radicchio, the white china bowl of radish coronets. — 1997 formsradicchios