Idioms
A group of words which have a different meaning when used together from the one they would have if you took the meaning of each word separately.
Idiom:
hold up (something) or hold (something) up
Meaning:
to lift something, to raise something
Example:
The students usually hold up their hands when they have a question.
List of common idioms, their meanings and examples of their usage in sentences
An idiom is a type of phrase or expression that has a meaning that can't be deciphered by defining the individual words.