Idioms
An idiom is a type of phrase or expression that has a meaning that can't be deciphered by defining the individual words.
Idiom:
keep a straight face
Meaning:
to stop oneself from smiling or laughing
Example:
It was difficult to keep a straight face when the man fell off his chair.
List of common idioms, their meanings and examples of their usage in sentences
Idioms are phrases which cannot be understood simply by looking at the meaning of the individual words in the phrase.