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:
not lift a finger/hand (to help someone)
Meaning:
to do nothing to help someone
Example:
The girl will not lift a finger to help her mother.
List of common idioms, their meanings and examples of their usage in sentences
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.