What is crecent blade?

As an AI language model, I don't have any context regarding the given term "crescent blade". However, a crescent blade can refer to a type of blade that is curved in a shape of a crescent or a new weapon that can be found in video games and movies, such as "Assassin's Creed". It can have a curved blade and be wielded in close combat to deliver slashing or cutting attacks. In general, crescent blades were commonly used in medieval warfare and were often attached to the end of a long staff to create a type of polearm.