idioms

/IH1 D IY0 AH0 M Z/
noun
  1. 1

    A manner of speaking, a mode of expression peculiar to a language, person, or group of people.

  2. 2

    A language or language variety; specifically, a restricted dialect used in a given historical period, context etc.

  3. 3

    An established expression whose meaning is not deducible from the literal meanings of its component words, often peculiar to a given language.

  4. 4

    An artistic style (for example, in art, architecture, or music); an instance of such a style.

  5. 5

    A programming construct or phraseology that is characteristic of the language.

Source: https://en.wiktionary.org/wiki/idiom, https://en.wiktionary.org/wiki/idioms