n. 1 a group of words established by usage and having a meaning not deducible from those of the individual words (as in over the moon, see the light). 2 a form of expression peculiar to a language, person, or group of people. 3 a the language of a people or country. b the specific character of this. 4 a characteristic mode of expression in music, art, etc.
[ F idiome or LL idioma f. Gk idioma -matos private property f. idios own, private ]