The American Heritage® Dictionary of the English Language, 4th Edition
n. A medium-to-large dog of a breed originating in Scotland as a sheepdog, having a long narrow muzzle and either a long thick straight coat or a short hard flat coat, depending on the variety.
n. Any of various breeds of dog originating in Scotland and England as sheepdogs
the GNU version of the Collaborative International Dictionary of English
n. The Scotch shepherd dog. There are two breeds, the rough-haired and smooth-haired. It is remarkable for its intelligence, displayed especially in caring for flocks.
The Century Dictionary and Cyclopedia
n. A sheep-dog; a variety of dog especially common in Scotland, much esteemed by shepherds and also by dog-fanciers.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a silky-coated sheepdog with a long ruff and long narrow head developed in Scotland
Word Usage
"A woman bought a 5-month-old collie from a homeless person and surrendered it to society."