Idioms
An idiom is defined as - a group of words in a fixed order that has a particular meaning that is different from the meanings of each word on its own.
Idiom:
have (something) on file
Meaning:
to have or keep a written record of something
Example:
I have the report on file on my computer.
List of common idioms, their meanings and examples of their usage in sentences
The language peculiar to a people or to a district, community, or class