Idioms
An idiom is a type of phrase or expression that has a meaning that can't be deciphered by defining the individual words.
Idiom:
skate on thin ice
Meaning:
to risk danger or disapproval about something
Example:
My friend is skating on thin ice and he may be fired from his job.
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