6 letters · 19 points in Scrabble
noun a fastener for locking together two toothed edges by means of a sliding tab
verb close with a zipper
origin1925, zip + -er. The trade name was registered in 1925 by B.F. Goodrich for “boots made of rubber and fabric,” claiming use of the name since June 1923. No longer a registered trademark.
Etymology from Wiktionary, CC BY-SA 3.0