A knapsack, sometimes mounted on a light frame, but always supported by straps, worn on a person’s back for the purpose of carrying things, especially when hiking, or on a student's back when carrying books
A backpack is a bag with straps that go over your shoulders, so that you can carry things on your back when you are walking or climbing. = rucksack
A knapsack, sometimes mounted on a light frame, but always supported by straps, worn on a person's back when hiking, or on a students back when carrying books
A specially designed saddle-bag worn by a Service Dog, to assist in carrying the dog's water dish, clean-up materials, identification, door-opening devices, literature, and other small items needed by the dog and his partner SSD designs and produces its own backpacks and harnesses
a bag carried by a strap on your back or shoulder hike with a backpack; "Every summer they are backpacking in the Rockies
a ball carrier, like a harness or belt To be worn in a game to carry extra ammo at the players disposal Carries a variety of paintball tubes, which hold the paintballs There are many different kinds of packs
A backpacker is a person who goes travelling with a backpack. someone who is travelling for pleasure, usually with not very much money, and who walks or uses public transport and carries a backpack
If you go backpacking, you go travelling with a backpack. the activity of travelling for pleasure, usually without very much money, and carrying a backpack. Sport of hiking while carrying clothing, food, and camping equipment in a pack on the back. In the early 20th century backpacking was primarily a means of getting to wilderness areas inaccessible by car or by day hike. It subsequently became associated with general touring by foot in urban as well as wilderness settings. Types of packs range from the frameless rucksack to the contour frame pack, with a frame of aluminum tubing and often a waistband that transfers most of the pack's weight to the hips