noun, plural big·horns, (especially collectively) big·horn.

a wild sheep, Ovis canadensis, of the Rocky Mountains, with large, curving horns.

Origin of bighorn

An Americanism dating back to 1775–85; big1 + horn




a river flowing from central Wyoming to the Yellowstone River in S Montana. 336 miles (540 km) long.

Bighorn Mountains

plural noun

a mountain range in N Wyoming, part of the Rocky Mountains. Highest peak, Cloud Peak, 13,165 feet (4013 meters).
Also called Big·horns. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for bighorn

Contemporary Examples of bighorn

  • I took the remote control and found a nature channel, where bighorn sheep collided against each other in alpine meadows.

    The Daily Beast logo
    To Shoot or Not to Shoot

    Edward Conlon

    April 14, 2011

Historical Examples of bighorn

  • They had stumbled in the dark on the bedding-place of a flock of Bighorn.

    The Trail Book

    Mary Austin

  • "Bighorn doesn't care for neighbors as you do, Peter," said she.

  • When Bighorn gave the signal the sentinels pricked up their ears.

    The Later Cave-Men

    Katharine Elizabeth Dopp

  • Fleetfoot showed it to Bighorn, who took it, then tossed it on the ground.

    The Later Cave-Men

    Katharine Elizabeth Dopp

  • And Bighorn, himself, took his stand at the point where the trails crossed.

    The Later Cave-Men

    Katharine Elizabeth Dopp

British Dictionary definitions for bighorn


noun plural -horns or -horn

a large wild sheep, Ovis canadensis, inhabiting mountainous regions in North America and NE Asia: family Bovidae, order Artiodactyla . The male has massive curved horns, and the species is well adapted for climbing and leaping
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