Idioms
An idiom is a group of words, or in other words, a phrase that has a meaning different from the literal meaning of the words in it.
Idiom:
off one's rocker
Meaning:
crazy
Example:
The man must be off his rocker if he thinks that he can spend much money and not have financial problems.
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