ours (ourz)pron. (used with a sing. or pl. verb) Used to indicate the one or ones belonging to us: The original of the painting is ours. Their children are grown, but ours are still young.[Middle English oures, from oure, our, from Old English ?re; see nes- in Indo-European roots.]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.ours (a??z) pron1. something or someone belonging to or associated with us: ours have blue tags. 2. of ours belonging to or associated with usCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014ours (a??rz, ?a? ?rz or, often, ?rz) pron. 1. a form of the possessive case of we used as a predicate adjective: Which house is ours? 2. that or those belonging to us: Ours are the pink ones. [1250?1300; Middle English (orig. north) ures, oures. See our, ‘s1] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.