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:
lay/light into (someone)
Meaning:
to attack someone with words
Example:
When I got to work this morning my boss laid/lit into me about my poor sales performance last month.
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 other than its literal meaning of the words in it.