trad
adj.— «He assured me that what he collects—and plays—is traditional, or “trad,” jazz. I told him I call it Dixieland. He called my terminology “unfortunate,” adding, “Eddie Condon hated the term Dixieland.” That should settle it.» —“‘Trad’ gift proves to be especially rewarding” by Jim Collins News-Herald (Willoughby, Ohio) Jan. 25, 2009. (source: Double-Tongued Dictionary)
Further reading
Samantha Harvey’s novel Orbital is a sensuous, exhilarating meditation about the strangeness of life on a space station, with its mix of tedious tasks and jaw-dropping views. And: a musician who rode the rails in his youth shares the slang he...
A resident of Michigan’s scenic Beaver Island shares the term, boodling, which the locals use to denote the social activity of leisurely wandering the island, often with cold fermented beverages. There have been various proposed etymologies...
In OED2 from 1956.