zipper n.— «A bill in the Florida Legislature died that targeted those motorists who speed up beside you, then cut you off when their lane ends. The offending drivers are commonly referred to as “zippers.”» —“Florida bill targeting...
pit zip n.— «Armpit zippers, affectionately called pit zips, allow you to adjust your body temperature to various wind conditions.» —“Sugoi Vapor Urban Jacket and Conrad Pant” by Chris Cosby Dirt Rag Aug. 7, 2006...