A saber is an old fashioned sword with a curved blade. Sabers were used in many historic battles, including the Napoleonic Wars in the early 19th century.
The saber is usually described as a "cavalry sword," or a weapon carried by a soldier on horseback. As guns became more common during wartime, cavalry troops armed with sabers became less and less typical. The word saber comes from the French sabre, "heavy, curved sword," Säbel in German and szablya in Hungarian, from the root szabni, "to cut."