sail·cloth (s?l?klôth?, -kl?th?)n.1. A heavy cotton canvas or strong synthetic fabric used for making sails or tents.2. A lightweight cotton canvas used especially for clothing and upholstery.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.sailcloth (?se?l?kl??) n1. (Nautical Terms) any of various fabrics from which sails are made2. (Textiles) a lighter cloth used for clothing, etcCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014sail?cloth (?se?l?kl??, -?kl??) n. 1. any of various fabrics, as of cotton, nylon, or Dacron, for boat sails or tents. 2. a lightweight canvas or canvaslike fabric used esp. for clothing and curtains. [1175?1225] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.