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
Cat hair may be something you brush off, but cat hair is also a slang term that means “money.” In the same way, cat beer isn’t alcoholic — some people use cat beer as a joking term for “milk.” And imagine walking on a...
There are eight major planets, but more than a million minor ones, including asteroids. If you discover one, you get the honor of naming it. The Dictionary of Minor Planet Names includes minor planets named for rock bands, jazz musicians, poets, and...
In OED2 from 1956.