Idioms
An idiom is defined as - a group of words whose meaning is different from the meanings of the individual words.
Idiom:
shack up with (someone)
Meaning:
to live with someone without marrying him or her
Example:
When my sister was younger she shacked up with her boyfriend for two years.
List of common idioms, their meanings and examples of their usage in sentences
Idioms can be a powerful linguistic tool only when they are used in the right way in the right places.