ultra
n.— «Later, after completing his first 50-mile “ultra”—the term for any run longer than the traditional marathon—he threw up in his company Lexus.» —“When a marathon just isn’t enough” by Mark Emmons Mercury News (San Jose, California) Oct. 28, 2005. (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...