idiomItalian → EnglishOxford Italian–Englishidiom /BrE ˈɪdɪəm , AmE ˈɪdiəm / noun 1 Linguistics (phrase) espressione f idiomatica; (form) idiotismo m 2 (language) (of speakers) idioma m; (of theatre, sport) gergo m 3 (of music, art, architecture) stile m