More on Furca from Infoplease:

• Furca - Furca (See Fossa and Forks.) Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894 Related ...
• Fossa et Furca - Fossa et Furca [pit and gallows ]. An ancient privilege granted by the Crown to its vassals, to ...
• Forks - Forks The gallows. (Latin, furca.) Cicero (de Divinitate, i. 26) says, “Ferens furcam ductus ...
• Dictionary of Phrase and Fable: F - Definitions, origins, and illustrative excerpts for words, phases, and literary allusions starting with "F"