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:
drop a bombshell
Meaning:
to announce some shocking news
Example:
The government dropped a bombshell when they announced that they were going to close the hospital.
List of common idioms, their meanings and examples of their usage in sentences
An idiom is a widely used saying or expression containing a figurative meaning that differs from the phrase's literal meaning.