Hav″er‐sack (hăv″ẽr‐săk), n. [F. havresac, G. habersack, sack for oats. See 2d Haver, and Sack a bag.]
1. A bag for oats or oatmeal.
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.