Idioms
An idiom is defined as - a group of words whose meaning is different from the meanings of the individual words.
Idiom:
watch one's P's and Q's
Meaning:
to be well-behaved, to be careful
Example:
The boy had to watch his P`s and Q`s after he caused many problems at school.
List of common idioms, their meanings and examples of their usage in sentences
An idiom is defined as - a group of words in a fixed order that has a particular meaning that is different from the meanings of each word on its own.