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[brong-koh] /ˈbrɒŋ koʊ/
noun, plural broncos.
a range pony or mustang of the western U.S., especially one that is not broken or is imperfectly broken.
Also, bronc, broncho.
Origin of bronco
1865-70, Americanism; < Mexican Spanish, short for Spanish potro bronco untamed colt (in Mexican Spanish: wild horse, half-tamed horse); bronco, apparently nasalized variant of Latin broccus; see broach Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for bronco
Contemporary Examples
Historical Examples
  • I skinned him and hung his pelt on a tree; and, on foot, made my way into camp, after a fruitless search for my bronco.

  • The rider dragged the bronco to a halt and slipped to the ground.

    Brand Blotters William MacLeod Raine
  • Moreover, to mount on the back of a bronco, wild or tame—the very meditation made the walls drop out of his stomach.

  • The bronco was carried down into a swirl of deep, angry water.

    The Fighting Edge William MacLeod Raine
  • I steered my bronco up the hill and started over the trap line.

    Black Beaver James Campbell Lewis
  • He did not know what that something was; but the bronco added to his suspicions by its behavior.

    When the West Was Young Frederick R. Bechdolt
  • He226 could not say more, for the bronco claimed all his attention.

    Dave Porter at Star Ranch Edward Stratemeyer
  • The bronco stock was bad enough but the green mules were the worst.

    When the West Was Young Frederick R. Bechdolt
British Dictionary definitions for bronco


noun (pl) -cos, -chos
(in the US and Canada) a wild or partially tamed pony or mustang of the western plains
Word Origin
C19: from Mexican Spanish, short for Spanish potro bronco unbroken colt, probably from Latin broccus projecting (as knots on wood), hence, rough, wild
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for bronco

also broncho, 1850, American English, "untamed or half-tamed horse," from noun use of Spanish bronco (adj.) "rough, rude," originally a noun meaning "a knot in wood," perhaps from Vulgar Latin *bruncus "a knot, projection," apparently from a cross of Latin broccus "projecting" (see broach (n.)) + truncus "trunk of a tree" (see trunk (n.)). Bronco-buster is attested from 1886.

Online Etymology Dictionary, © 2010 Douglas Harper
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Slang definitions & phrases for bronco



A young male not accustomed to nor complaisant in homosexual relations (1970s+ Homosexuals)

[fr Spanish bronco, ''coarse, rough'']

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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