blue-sky
v.— «They couldn’t understand why we would pour money into such “harebrained blue-skying” instead of giving it to them to design yet another model of their ill-fated line of processors.» —“Nurturing of Corporate Research” by Richard S. Rosenbloom, Alan M. Kantrow Harvard Business Review Feb. 1, 1982. (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...