backfeeding
n.— «Never try to power the house wiring by plugging the generator into a wall outlet, a practice known as “backfeeding.”» —“Consumer Product Safety Commission Safety Alert: Portable Generator Hazards” U.S. Consumer Product Safety Commission Oct. 5, 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...