—v.t. 1. to fasten or unfasten with a zipper: Zip your jacket. Zip open the traveling case. 2. to enclose or free by doing up or undoing a zipper: Zip this money into your wallet. Zip me out of my dress.
—v.i. 1. to become fastened or unfastened by means of a zipper: a handy purse that zips shut. 2. to do up or undo a zipper.
—n. a zipper.
—adj. utilizing or having a zipper: a coat with a zip front.