backpack

Noun, Verb (intransitive), Verb (transitive)

back=pack

CIDE DICTIONARY

backpack, n.

a bag carried on the back, supported by straps looped over the shoulders. [WordNet 1.5]

backpack, v. i.

to hike while carrying a backpack; -- often used in the form go backpacking; as, to backpack through the forest. [PJC]

backpack, n. & v.
--n. a rucksack.
--v.intr. travel or hike with a backpack.

Derivative

backpacker n.

For further exploring for "backpack" in Webster Dictionary Online

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