white top
n.— «To get to Bamiyan Province about a hundred miles due west of Kabul, the Afghan capital, Mrs. Bush flew by helicopter. There was none of the airborne luxury of the so-called “white tops”—the Sikorsky Sea Kings that usually serve as Marine One. On this trip, she boarded a U.S. Army CH-47D Chinook—a twin rotor helicopter outfitted for combat.» —“Laura Bush’s Secret Afghanistan Trip” by Mark Knoller in Kabul, Afghanistan CBS News June 9, 2008. (source: Double-Tongued Dictionary)