The language peculiar to a people or to a district, community, or class
Idiom:
scratch (someone's) back
Meaning:
to do something for someone in the hope that they will do something for you
Example:
"You scratch my back and I`ll scratch yours," the customer said when we talked about the new sales contract.
List of common idioms, their meanings and examples of their usage in sentences
An expression in the usage of a language that is peculiar to itself either in having a meaning that cannot be derived from the conjoined meanings of its elements or in its grammatically atypical use of words.