n. [ OE. graihund, greihound, greahund, grihond, Icel. greyhundr; grey greyhound + hundr dog; cf. AS. grīghund. The origin of the first syllable is unknown. ] 1. A slender, graceful breed of dogs, remarkable for keen sight and swiftness. It is one of the oldest varieties known, and is figured on the Egyptian monuments. [ Written also grayhound. ] [ 1913 Webster ]

2. A swift steamer, esp. an ocean steamer. [ Webster 1913 Suppl. ]