Idioms
The language peculiar to a people or to a district, community, or class
Idiom:
stand in for (someone)
Meaning:
to be a substitute for someone
Example:
The new actor stood in for the famous actor who was sick.
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.