noun, plural kos. (in India)
a unit of land distance of various lengths from 1 to 3 miles (1.6 to 4.8 km).
Also, coss.

< HindiSanskrit krośa

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[kos, kaws]
one of the Greek Dodecanese Islands in the SE Aegean Sea, off the SW coast of Turkey. 111 sq. mi. (287 sq. km).
Also, Cos.
Italian Coo.


[n. key-oh, key-oh; v. key-oh] Slang.
noun, plural KO's.
a knockout in boxing.
verb (used with object), KO'd, KO'ing.
to knock unconscious, especially in a boxing match; knock out.
Also, K.O., k.o., kayo.

1920–25; initial letters of knock out

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
KO or k.o. (ˈkeɪˈəʊ)
vb , KO's, KO'ing, KO'd, k.o.'s, k.o.'ing, k.o.'d
1.  See knockout a slang term for knock out
n , KO's, KO'ing, KO'd, k.o.'s, k.o.'ing, k.o.'d, KO's, k.o.'s
2.  a slang term for knockout
k.o. or k.o.

kos (kəʊs)
n , pl kos
Also called: coss an Indian unit of distance having different values in different localities. It is usually between 1 and 3 miles or 1 and 5 kilometres
[from Hindi kōs]

Kos or Cos1 (kɒs)
an island in the SE Aegean Sea, in the Greek Dodecanese Islands: separated from SW Turkey by the Kos Channel; settled in ancient times by Dorians and became famous for literature and medicine. Pop: 30 947 (2001). Area: 282 sq km (109 sq miles)
Cos or Cos1

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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Word Origin & History

measure of distance in India (about 2 miles), from Hindi kos, from Skt. krosah, lit. "a call, a shout;" thus, "distance within which a man's shout can be heard."
Online Etymology Dictionary, © 2010 Douglas Harper
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Slang Dictionary

KO definition

and kayo
  1. n.
    a knockout. (The abbreviation is an initialism. Boxing.) : It was a quick KO, and Wilbur was the new champ.
  2. tv.
    to knock someone out. (See also KOed. Boxing.) : Wilbur planned to KO Wallace in the third round.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition.
Copyright 2007. Published by McGraw-Hill Education.
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American Heritage
Abbreviations & Acronyms
  1. Coca-Cola Co.

  2. knockout

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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