idiomEnglish → FrenchOxford English–Frenchidiom /BrE ˈɪdɪəm , AmE ˈɪdiəm / noun 1 Linguistics (phrase) idiome m, idiotisme m technical 2 (language) (of speakers) parler m; (of theatre, sport) langue f 3 (of music, art, architecture) style m in the jazz idiom dans le style jazz