whip·pet \ˈhwipə̇t also ˈwi-; usu -ə̇d.+V\noun (-s) Etymology: probably from whip (I)(to move nimbly) + -et 1. a.obsolete: a small dog b.: a small swift slender dog of greyhound type developed in the north of England from a cross between the Italian greyhound and a terrier 2.alsowhippet tank: a small tank used in World War I by the Allied armies