hide·out (h?d?out?)n. A place of shelter or concealment.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.hideout (?ha?d?a?t) na hiding place, esp a remote place used by outlaws, etc; hideawayvb (intr) to remain deliberately concealed, esp for a prolonged period of timeCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014hide?out` or hide?-out`, n. a safe place for hiding, esp. from the law. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.