'backpacker' definitions:

Definition of 'backpacker'

From: WordNet
noun
A hiker who wears a backpack [syn: backpacker, packer]

Definition of 'backpacker'

From: GCIDE
  • backpacker \back"pack*er\ n. one who backpacks; as, two backpackers were mauled by bears in Yellowstone this week. [PJC]