Haversack
Haversack (hav"ẽr*sak) , noun
[French havresac, German habersack, sack for oats. See 2d Haver, and Sack a bag.]
1.
A bag for oats or oatmeal. [Provincial English]
2.
A bag or case, usually of stout cloth, in which a soldier carries his rations when on a march; -- distinguished from knapsack.
3.
A gunner's case or bag used to carry cartridges from the ammunition chest to the piece in loading.