Cacus (Ca`cus) , a mythological brigand of gigantic stature who occupied a cave in Mount Aventine, represented by Virgil as breathing smoke and flames of fire; stole the oxen of Hercules as he was asleep, dragging them to his cave tail foremost to deceive the owner; strangled by Hercules in his rage at the deception quite as much as the theft.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Cachet, Lettre de * Cadastre