spadia
n.— «The ad, called a “spadia,” was the equivalent of a full page, folded over the regular circular so that half showed on the front and half on the back. The private-label page pulled off to reveal more private-label items on the reverse side.» —“Harco Drug targets an incentive-driven private-label strategy” in Northport, Ala. Drug Store News Nov. 6, 1989. (source: Double-Tongued Dictionary)
Further reading
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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...