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:
get a foothold (somewhere)
Meaning:
to find a starting point somewhere
Example:
The new political party is beginning to get a foothold in the big cities.
List of common idioms, their meanings and examples of their usage in sentences
The language peculiar to a people or to a district, community, or class