idiom
noun
[ ˈɪdɪəm ]
• a group of words established by usage as having a meaning not deducible from those of the individual words (e.g. over the moon, see the light ).
• a characteristic mode of expression in music or art.
• "they were both working in a neo-impressionist idiom"
Origin:
late 16th century: from French idiome, or via late Latin from Greek idiōma ‘private property, peculiar phraseology’, from idiousthai ‘make one's own’, from idios ‘own, private’.
