Idioms
A group of words which have a different meaning when used together from the one they would have if you took the meaning of each word separately.
Idiom:
rank and file
Meaning:
the members of a group and not the leaders, regular soldiers and not the officers
Example:
The rank and file of the large union were happy with their new contract.
List of common idioms, their meanings and examples of their usage in sentences
An idiom is a widely used saying or expression containing a figurative meaning that differs from the phrase's literal meaning.