ˈɪdɪəm 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]