noun a sovereign remedy; a cure.
2. treacle ·noun a remedy against poison. ·see theriac, 1.
3. treacle ·noun molasses; sometimes, specifically, the molasses which drains from the sugar-refining molds, and which is also called sugarhouse molasses.
4. treacle ·noun a saccharine fluid, consisting of the inspissated juices or decoctions of certain vegetables, as the sap of the birch, sycamore, and the like.