idioms is a form of:

Idiom



noun
1.
(An accepted phrase whose meaning must be known as a whole, for it cannot be learned from the meaning of these same words used separately, the language used by the people of a certain region, group, class, etc) សំណួរវោហា
Example: The idiom of the Orient the Chinese idiom, Shake spear's idiom. in the local idiom ភាសាដោយឡែកនៃជនជាតិណាមួយ, ពាក្យវិបល្លាស, វិចារវិលាស, និពន្ធបែបដោយឡែក idiom of the language ពាក្យឬន័យមិនធម្មតា
ENGLISH MEANING
noun
1.
The syntactical or structural form peculiar to any language; the genius or cast of a language.
2.
An expression conforming or appropriate to the peculiar structural form of a language; in extend use, an expression sanctioned by usage, having a sense peculiar to itself and not agreeing with the logical sense of its structural form; also, the phrase forms peculiar to a particular author.
3.
Dialect; a variant form of a language.