Idioms
The language peculiar to a people or to a district, community, or class
Idiom:
knock one's head against the wall
Meaning:
to waste time trying to do something with no success
Example:
The company manager's have been knocking their heads against the wall trying to solve the problem.
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 different from the literal meaning of the words in it.