n. A commercial played before a movie.
But common sense has never held sway in the world of advertising, where the latest gimmick is the "cinemad." Mad is right. Running after the snack-bar spots and before the coming attractions, these ads hawk everything the tube does at home, including TV shows, and some theatre-chain executives see this as the most irresistible source of revenue since the jumbo, colossal soft drink.
—“Give it the hook,” The Gazette, August 23, 1999
1999 (earliest)
When the "cinemads" — called rolling stock ads, in the trade — are done, moviegoers finally get sneak previews of coming attractions, which are also ads, but entertaining enough to get a pass.
—John Carroll, “Unbecoming attractions,” The Boston Globe, August 15, 1999