Definition of treacle

• n. - A remedy against poison. See Theriac, 1.
• n. - A sovereign remedy; a cure.
• n. - Molasses; sometimes, specifically, the molasses which drains from the sugar-refining molds, and which is also called sugarhouse molasses.
• n. - A saccharine fluid, consisting of the inspissated juices or decoctions of certain vegetables, as the sap of the birch, sycamore, and the like.