'Haversack' definitions:

Definition of 'haversack'

From: WordNet
noun
A bag carried by a strap on your back or shoulder [syn: backpack, back pack, knapsack, packsack, rucksack, haversack]

Definition of 'Haversack'

From: GCIDE
  • Haversack \Hav"er*sack\ (h[a^]v"[~e]r*s[a^]k), n. [F. havresac, G. habersack, sack for oats. See 2d Haver, and Sack a bag.] [1913 Webster]
  • 1. A bag for oats or oatmeal. [Prov. Eng.] [1913 Webster]
  • 2. A bag or case, usually of stout cloth, in which a soldier carries his rations when on a march; -- distinguished from knapsack. [1913 Webster]
  • 3. A gunner's case or bag used to carry cartridges from the ammunition chest to the piece in loading. [1913 Webster]