Lancer/ˈlænsər/ Definition 1 of 4Pro Tip 1/3Historical Use The term is often associated with bygone military practices and historical novels or movies. He read about the heroic lancers in the history book. Pro Tip 2/3Visual Imagery Imagining a lancer can help remember its meaning — picture a soldier on horseback with a long weapon. The painting depicted a lancer ready for battle. Pro Tip 3/3Not Modern Warfare Lancers are not common in modern warfare; the term is more historical or ceremonial. In the parade, the lancer showcased traditional military attire.