ic·y (??s?)adj. ic·i·er, ic·i·est 1. Containing or covered with ice: an icy road.2. Bitterly cold; freezing: an icy day. See Synonyms at cold.3. a. Unfriendly or hostile: an icy stare.b. Showing no emotion: icy detachment.ic?i·ly adv.ic?i·ness n.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.icy (?a?s?) adj, icier or iciest1. made of, covered with, or containing ice2. resembling ice3. freezing or very cold4. cold or reserved in manner; aloofCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014i?cy (?a? si) adj. i?ci?er, i?ci?est. 1. made of, full of, or covered with ice. 2. resembling ice. 3. very cold. 4. lacking warmth of feeling. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.