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:
wild goose chase
Meaning:
an absurd or hopeless search
Example:
The man led the police on a wild goose chase when he ran away from them.
List of common idioms, their meanings and examples of their usage in sentences
An idiom is defined as - a group of words whose meaning is different from the meanings of the individual words.