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:
hell-on-wheels
Meaning:
a bad-tempered or nagging or crabby person
Example:
The woman is hell-on-wheels in the morning so you should be careful of her.
List of common idioms, their meanings and examples of their usage in sentences
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.