From Longman Dictionary of Contemporary Englishto cut a long story shortto cut a long story shortspoken used to say that you are only going to mention the main facts of something To cut a long story short, he threw them out of the house. → cut
Examples from the Corpus
to cut a long story short• I was a waitress in a bar and he was one of my customers, and that, to cut a long story short, is how we met.to cut a long story shortto cut a long story short (also to make a long story short American English)SHORT TIME used when you only give the main point of something you are talking about, and not all the other details → story 