A place where merchandise is offered for sale; a shop. A stock or supply reserved for future use: a squirrel's store of acorns. Supplies, especially of food, clothing, or arms. A place where commodities are kept; a warehouse or storehouse. A great quantity or number; an abundance. To reserve or put away for future use. To fill, supply, or stock. To deposit or receive in a storehouse or warehouse for safekeeping. Computer Science To copy (data) into memory or onto a storage device, such as a hard disk. in store Forthcoming: great trouble in store for her. in store In reserve; stored.