The custom LEGO weapon of the week is...the Pilum! Pilum was the Roman term for javelin. Oh those Romans, they just always had to be different! Although, technically speaking, the word "pilum" predated "javelin" which maybe, kinda, probably originated from a Celtic language. So there's your etymology lesson of the day. Now back to the weapon! The Pilum was used by the Roman army as a throwing tool. While it may seem primitive, the Pilum was actually thoughtfully designed for battle.The head of the weapon was pyramidal in shape and hard enough to penetrate, or at least damage, a shield or armor. The shaft, however was made of softer iron that would break easily upon being thrown. As a result, the enemy could not utilize the Pilum, once it had been used. Pretty cool, huh? Our version isn't quite as tactical, but it does come in a bunch of colors, which obviously makes it better than the original Roman ones.