What common legal item literally means "under penalty"?

More Questions:

What sport takes place in a velodrome?

What colour are shelled pistachio nuts?

What was first marketed with hillbilly-themed advertising, since its name is an euphemism for moonshine?

Who were Arges, Brontes, and Steropes, who forged Zeus" thunderbolts in Greek mythology?

Who wrote "The Scarlett Letter"?

What George Orwell book foresees Oceania, Eurasia and Eastasia?

What Irish author wrote the 1938 novel "Murphy"?

What year was the first "Twilight" novel published in?

The Arkansas River flows into what river?

What is the atomic number of iodine?

Who sang lead vocals for the rock band Hole?

What TV show featured the fictional "The Raccoons" fraternity?

Which US President fathered children with former slave Sally Hemmings?

Which Constitutional amendment gave Congress the power to levy tax on personal incomes?

What year was instant coffee was first patented in France?