from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A strap slung across the forehead or the chest to support a load carried on the back.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A strap used to carry objects tied to its ends by placing the broadened or cushioned middle of the strap over the head just behind the forehead.
from the GNU version of the Collaborative International Dictionary of English
- n. A strap placed across a man's forehead to assist him in carrying a pack on his back.
from The Century Dictionary and Cyclopedia
- n. A strap by which a pack is carried across a portage or through the woods.
tump (alteration of mattump, of Southern New England Algonquian origin) + line1.(American Heritage® Dictionary of the English Language, Fourth Edition)
Tump is a shortening of mattump, metump, from a Penobscot word. (Wiktionary)