Idioms
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:
sign on the dotted line
Meaning:
to place one's signature on a contract or other important paper
Example:
The sales manager gave me the contract and asked me to sign on the dotted line.
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