idiom |ˈidēəm| noun
1 a group of words established by usage as having a meaning not deducible from those of the individual words (e.g., rain cats and dogs, see the light).
• a form of expression natural to a language, person, or group of people: he had a feeling for phrase and idiom.
• the dialect of a people or part of a country.
2 a characteristic mode of expression in music or art: they were both working in a neo-Impressionist idiom.
ORIGIN late 16th cent.: from French idiome, or via late Latin fr















