slanket
n.— «Graves was a natural fan of a blanket that offered coverage to the arms without restricting movement. But he did not think “Sleevey” was the right name for it. “I said, ‘It’s a blanket with sleeves,’” Graves recalled, “You should call it a ‘Slanket.’”» —“Freshman’s inconvenience gives way to the Slanket” by Austin Fido Miami Herald (Florida) Mar. 12, 2006. (source: Double-Tongued Dictionary)