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:
under one's breath
Meaning:
in a whisper, with a low voice
Example:
The man was talking under his breath in the movie theater and somebody complained.
List of common idioms, their meanings and examples of their usage in sentences
An idiom is a widely used saying or expression containing a figurative meaning that differs from the phrase's literal meaning.