Also found in: Thesaurus, Idioms, Encyclopedia, Wikipedia.
Related to grayhound: Amtrak
one of a breed of tall, slender shorthaired dogs noted for their keen sight and swiftness.
[before 1000; Old English grīghund < Old Norse greyhundr; compare see hound]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.