Idiom of the Day: In a nutshell 

In a nutshell = in the fewest possible words. E.g. She put the matter in a nutshell.

Synonyms:

in short, briefly, in brief, to put it briefly, to cut a long story short, in a word, to sum up, in sum, to come to the point, in essence, in outline "and that, in a nutshell, is the whole movie"