1. A sudden sharp hissing or sibilant sound
2. Energy, vim
3. Zip code

To close (or, sometimes, open) with a zipper; SYN. zipper, zip.

A file extension that identifies a compressed archive file encoded in ZIP format, as by PKZIP. See also compressed file, PKZIP.
A DIP package that has all leads on one edge in a zigzag pattern and mounts in a vertical plane.

Chiefly British: zipper.