The word "Halloween" dates back to the 16th century. The term is derived from "All Hallows' Eve," which refers to the evening before All Hallows' Day (also known as All Saints' Day), a Christian holiday observed on November 1st. Over time, "All Hallows' Eve" was shortened to "Halloween." The traditions and customs associated with Halloween have evolved and incorporated various cultural influences throughout history, but the term itself has its roots in the 16th century.