flex fuel
n.— «Minnesotans are using more than 100,000 vehicles capable of running on 85 percent ethanol. Many gas stations offer that blend for the “flex fuel” cars, as they are called.» —“Ethanol development needs better support” Minnesota Daily Apr. 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...