Idioms
An idiom is a group of words, or in other words, a phrase that has a meaning different from the literal meaning of the words in it.
Idiom:
hold (someone) hostage
Meaning:
to keep someone as a hostage
Example:
The bank robbers were holding the woman hostage.
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.