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:
weave in and out (of something)
Meaning:
to move or drive or walk in and out of something such as traffic
Example:
The man was driving very fast and was weaving in and out of the traffic.
List of common idioms, their meanings and examples of their usage in sentences
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.