most zipless

zip

2 [zip]
verb (used with object), zipped, zipping.
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.
verb (used without object), zipped, zipping.
3.
to become fastened or unfastened by means of a zipper: a handy purse that zips shut.
4.
to do up or undo a zipper.
noun
5.
a zipper.
adjective
6.
utilizing or having a zipper: a coat with a zip front.

Origin:
1935–40, Americanism; back formation from zipper

zipless, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
zip (zɪp)
 
n
1.  a.  Also called: zip fastener, US and Canadian term: zipper a fastening device operating by means of two parallel rows of metal or plastic teeth on either side of a closure that are interlocked by a sliding tab
 b.  (modifier) having or equipped with such a device: a zip bag
2.  a short sharp whizzing sound, as of a passing bullet
3.  informal energy; vigour; vitality
4.  slang (US) nothing
5.  slang (US), (Canadian) sport nil
 
vb (often foll by up) , zips, zipping, zipped
6.  to fasten (clothing, a bag, etc) with a zip
7.  (intr) to move with a zip: the bullet zipped past
8.  (intr; often foll by along, through, etc) to hurry; rush: they zipped through town
9.  (tr) computing to compress (a file) in order to reduce the amount of memory required to store it or to make sending it electronically quicker
 
[C19: of imitative origin]

Zip (zɪp)
 
n
(NZ) trademark an electric water heater

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

zip
"move rapidly," 1852, of echoic origin. Zippy is first attested 1904. Zip gun "homemade pistol" first recorded 1950.

zip
"zero," 1900, student slang for a grade of zero on a test, etc.; of unknown origin; cf. zilch.

zip
"to close or fasten by means of a zipper," 1932, back-formation from zipper.

zip
1963, in U.S. postal ZIP code, an acronym for Zone Improvement Plan, no doubt chosen with conscious echo of zip (v.1).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Abbreviations & Acronyms
zip
compressed file
ZIP
  1. zone improvement plan

  2. Zone Information Protocol

The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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