sheepdog

or sheep dog

[ sheep-dawg, -dog ]
/ ˈʃipˌdɔg, -ˌdɒg /

noun

a dog trained to herd and guard sheep.

Origin of sheepdog

First recorded in 1765–75; sheep + dog
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for sheep-dog

British Dictionary definitions for sheep-dog

sheepdog

/ (ˈʃiːpˌdɒɡ) /

noun

Also called: shepherd dog a dog used for herding sheepSee Border collie
any of various breeds of dog reared originally for herding sheepSee Old English sheepdog, Shetland sheepdog
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