G-string (j??str?ng?)n.1. A narrow loincloth supported by a waistband; a breechcloth.2. A similar garment, usually decorated, that is worn especially by stripteasers.[Origin unknown.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.G-string n 1. (Clothing & Fashion) a piece of cloth attached to a narrow waistband covering the pubic area, worn esp by strippers 2. (Clothing & Fashion) a strip of cloth attached to the front and back of a waistband and covering the loins 3. (Classical Music) music a string tuned to G, such as the lowest string of a violin Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014G-string (?d?i?str??) n. a narrow strip of fabric covering the genitals and secured at the waist by a cord, worn esp. by stripteasers, dancers, etc. [1875?80, Amer.; orig. uncertain] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.