zip (v.1) Look up zip at Dictionary.com
"move rapidly," 1852, of echoic origin. Related: Zipped; zipping. Zip gun "homemade pistol" first recorded 1950.
zip (adj.) Look up zip at Dictionary.com
1963, in U.S. postal ZIP code, an acronym for Zone Improvement Plan, no doubt chosen with conscious echo of zip (v.1).
zip (n.) Look up zip at Dictionary.com
"zero," 1900, student slang for a grade of zero on a test, etc.; of unknown origin; cf. zilch.
zip (v.2) Look up zip at Dictionary.com
"to close or fasten by means of a zipper," 1932, back-formation from zipper. Related: Zipped; zipping.