binocularpair of binocularsbin·oc·u·lar (b?-n?k?y?-l?r, b?-)adj.1. Relating to, used by, or involving both eyes at the same time: binocular vision.2. Having two eyes arranged to produce stereoscopic vision.n. often binoculars An optical device, such as a pair of field glasses or opera glasses, designed for simultaneous use by both eyes and consisting of two small telescopes joined together.bin·oc?u·lar?i·ty (-l?r??-t?) n.bin·oc?u·lar·ly adv.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.binoculars (b??n?kj?l?z; ba?-) pl nan optical instrument for use with both eyes, consisting of two small telescopes joined together. Also called: field glasses Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014