• Aaron Burr, for one
• Burr or Hamilton, e.g.
• Burr, at times
• Hamilton or his foe, famously
• Hamilton, for one
• Hamilton, notably
• Hamilton, vis-
• Inigo or D.P. Roberts
• It takes a second to be one
• One settling a score, say
• One who takes 20 paces, perhaps
• One with a foil
• One with a second
• One with a second helping
• Pacer?
• Pistol holder, perhaps
• Pistol-packing pacer
• Pistoleer, perhaps