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.
to slow down and make no progress, to become stuck (a bog is an area of land that is wet and muddy - like a swamp)
I quickly became bogged down with all of the work that I had to do.
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