Idioms
An idiom is a type of phrase or expression that has a meaning that can't be deciphered by defining the individual words.
Idiom:
a rain check
Meaning:
a free ticket to an event that replaces a ticket that has been cancelled because of rain or for some other reason
Example:
We received a rain check for the concert that was suddenly cancelled.
List of common idioms, their meanings and examples of their usage in sentences
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.