plural backpacks
Definition of backpack
(Entry 1 of 2)
1a
: a pack (see pack entry 1 sense 1a) that usually has two shoulder straps and is carried on the back: such as
(1)
: a large pack (as of canvas or nylon) that is supported by an external or internal frame (as of aluminum) and is used especially for carrying supplies when hiking and camping
The logistics of the trip required that I carry all my stuff in a backpack. Since I didn't want to lug too heavy a load on the hiking leg of the trip, I pared way down.— Daisann McLane
(2)
: a bag or small pack (as of canvas, polyester, or nylon) used for carrying personal belongings or supplies : knapsack
I rode my bicycle to the market and rode home with my backpack full of exotic lettuces and basil-garlic baguettes.— Meredith Maran Each morning, tens of thousands of moms load phones, along with homework, into the backpacks of schoolchildren.— Michael Specter
b
: a load carried on the back
2
: a piece of equipment designed for use while being carried on the back
By wearing a jet-propelled "space backpack," astronauts will be able to move freely in space, making it possible to build, repair, and maintain craft in orbit … — Business Week I'm soaring above the central Sahara in a powered paraglider, a single-seat aircraft that looks like a flying lawn chair. Developed in France, it combines an inflated, parachute-like wing with a 50-pound motorized backpack.— George Steinmetz
backpack
verb
backpacked; backpacking; backpacks
Definition of backpack (Entry 2 of 2)
: to carry (food or equipment) on the back especially in hiking
: to hike with a backpack
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Merriam-Webster unabridged
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Time Traveler for backpack
The first known use of backpack was in 1897
See more words from the same year