suitcase provider
n.— «The vast majority of these are very small—in many cases, one-person enterprises or, in the vernacular, “suitcase providers.”…The traditional view is that a “suitcase provider” is a bad thing because it implies someone who is a fly-by-night. Usually, though, they are people who have worked in a profession for many years and provide training through mentoring and coaching.» —“The Skills Supermarket That’s Virtually Everywhere” by Jim Freeman Biz-Community (Cape Town, South Africa) Oct. 10, 2007. (source: Double-Tongued Dictionary)
Further reading
What’s up with ketchup? The shifting history and spelling of the name of this condiment. For centuries, ketchup was a fishy sauce originating in Asia—the tomatoes came only later! Plus, a new book shows what’s lost when a language dies: when there...
Among ham radio enthusiasts, the word Elmer has become an affectionate term for an experienced ham radio operator who mentors a novice. It’s also used as a verb: Elmering someone means helping a new ham. The term was coined in a 1971 magazine...