Idioms
An idiom is defined as - a group of words whose meaning is different from the meanings of the individual words.
Idiom:
walking papers
Meaning:
a statement saying that one is fired from his or her job
Example:
My friend was given his walking papers from his company last week.
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