The Collaborative International Dictionary
sluthhound
Sleuthhound \Sleuth"hound`\, n. [See Sleuth, and cf. Slothound.] (Zo["o]l.) A hound that tracks animals by the scent; specifically, a bloodhound. [Spelt variously slouthhound, sluthhound, etc.]
Wiktionary
sluthhound
n. (obsolete form of sleuthhound English)