Idioms
An idiom is a widely used saying or expression containing a figurative meaning that differs from the phrase's literal meaning.
Idiom:
What's the big idea?
Meaning:
Why did you do that?, What are you doing?
Example:
"What`s the big idea? Why are you using my bicycle?"
List of common idioms, their meanings and examples of their usage in sentences
Idioms are phrases which cannot be understood simply by looking at the meaning of the individual words in the phrase.