1. A sturdy bag designed for carrying articles on a person's back, having shoulder straps and often mounted on a lightweight frame.
2. A piece of equipment, often containing life-support devices, designed to be used while being carried on the back: a parachute in a backpack; an astronaut's backpack.
v. back·packed, back·pack·ing, back·packs
To hike or travel while carrying a backpack.
To carry in a backpack.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.