I. noun
also gray·hound ˈgrāˌhau̇nd
Etymology: Middle English grehound, from Old English grīghund, from grīg- (akin to Old Norse grey bitch) + hund hound; perhaps akin to Old English grǣg gray — more at gray , hound
1.
a. : a tall slender graceful smooth-coated dog of a breed originating in the Near East that is characterized by swiftness and keen sight and has been used for coursing game for many centuries — see italian greyhound
b. : any of several dogs (as a whippet or a saluki) related to or similar to the greyhound
2. : a swift steamer ; especially : ocean liner
[s]greyhoun.jpg[/s]
II. intransitive verb
of a hooked fish : to alternate leaps and shallow dives at high speed