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.
Idiom:
make cracks (about someone or something)
Meaning:
to ridicule or make jokes about someone or something
Example:
The radio announcer made cracks about the famous athlete during the interview.
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.