What is rucksack definition?

A rucksack is a type of backpack that is commonly used for outdoor activities such as hiking, camping, or traveling. It typically has two straps that are worn over the shoulders and a main compartment that is accessed through a zipper or drawstring closure. Rucksacks may also have additional pockets and compartments for organization. The term "rucksack" comes from the German word "rucken," which means "back," and "sack" which means "bag." Rucksacks are designed to distribute weight evenly across the back and are often made with durable materials that can withstand the elements and rough terrain.