An idiom is defined as - a group of words whose meaning is different from the meanings of the individual words.
Idiom:
cut (someone) a check
Meaning:
to write a check to someone, to have a computer print a check (usually used for checks from a business)
Example:
We cut the man a check for the work that he had done.
List of common idioms, their meanings and examples of their usage in sentences
An expression in the usage of a language that is peculiar to itself either in having a meaning that cannot be derived from the conjoined meanings of its elements or in its grammatically atypical use of words.