noun.
A medicinal compound of various ingredients, formerly believed to be capable of curing or preventing the effects of poison, particularly the effects of the bite of a serpent. See theriac.
noun.
More generally, a remedy; a panacea; a sovereign antidote or restorative: often used figuratively.
noun.
The spume of sugar in sugar-refineries: so called as resembling in appearance or supposed medicinal properties the ancient theriacal compounds.
noun.
A saccharine fluid consisting of the inspissated juices or decoctions of certain vegetables, as the sap of the birch or of the sugar-maple.
noun.
One of several plants sometimes regarded as antidotes to poison, or named from plants so regarded. See the phrases below.