dipstick survey
n.— «GLR said that four months after it launched the new service in the capital, a dipstick survey showed it had an average daily audience of 170,000 people.» —“LBC (Crown) Takes Issue With BBC Demand Claim” Broadcast Mar. 31, 1989. (source: Double-Tongued Dictionary)
Further reading
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...
One of the celestial bodies listed in The Dictionary of Minor Planet Names(Amazon) is called Sumaura. It’s the name of the oldest private elementary school in Kobe, Japan, and was suggested by the discoverer’s son. This is part of a...