backpack /ˈbæk.pæk/verb 3noun 2forms 3 verb3 •To hike and camp overnight in backcountry with one's gear carried in a backpack.I spent a month backpacking in the Rockies. •To engage in low-cost, generally urban, travel with minimal luggage and frugal accommodation. •(rare) To place or carry (an item or items) in a backpack.Astronauts backpack oxygen during spacewalks. noun2 •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.Many seats carry reservation labels, while the luggage racks are festooned with backpacks and suitcases. — 2022 •A similarly placed item containing a parachute or other life support equipment. formsbackpacked · backpacking · backpacks