Old soldier moved quietly into jetty

• Someone armed with a pistol (especially a soldier so armed)
• Wild Bill Hickok, notably

WordNet Word definitions in WordNet
n. someone armed with a pistol (especially a soldier so armed)

Wikipedia Word definitions in Wikipedia
A pistoleer is a soldier trained to use a pistol , or more generally anyone armed with such a weapon. The earliest kind of pistoleer was the mounted German Reiter , who came to prominence in Europe after the Battle of St. Quentin in 1557. These soldiers ...

Wiktionary Word definitions in Wiktionary
n. A person, especially a soldier, armed with a pistol

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Pistoleer \Pis`to*leer"\, n. [Cf. F. pistolier.] One who uses a pistol. [R.] --Carlyle.