ouch 1 (ouch)interj. Used to express sudden pain or displeasure.ouch 2 (ouch)n. Obsolete 1. A setting for a precious stone.2. A clasp or brooch, especially one set with jewels.[Middle English ouche, from Anglo-Norman (une) ouche, alteration of (une) nouch, (a) brooch, of Germanic origin; see ned- 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.ouch (a?t?) interjan exclamation of sharp sudden painouch (a?t?) n1. (Jewellery) a brooch or clasp set with gems2. (Jewellery) the setting of a gem[C15 an ouch, mistaken division of C14 a nouche, from Old French nouche, of Germanic origin; compare Old High German nusca buckle]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014ouch1 (a?t?) interj. (used to express sudden pain or dismay.) [1830?40, Amer.;