Idioms
An idiom is defined as - a group of words whose meaning is different from the meanings of the individual words.
Idiom:
beef up (something) or beef (something) up
Meaning:
to make something stronger
Example:
The police beefed up the security around the convention site.
List of common idioms, their meanings and examples of their usage in sentences
The language peculiar to a people or to a district, community, or class