kg

from The American Heritage® Dictionary of the English Language, 5th Edition.

• abbreviation kilogram

from The Century Dictionary.

• noun An abbreviation of keg;
• noun of kilogram.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun metrology Symbol for the kilogram, an SI unit of mass equal to 103 grams.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun one thousand grams; the basic unit of mass adopted under the Systeme International d'Unites