1. (n.) An ancient composition esteemed efficacious against the effects of poison; especially, a certain compound of sixty-four drugs, prepared, pulverized, and reduced by means of honey to an electuary; -- called also theriaca Andromachi, and Venice treacle.

2. (n.) Treacle; molasses.

alexipharmic antacid antiserum antitoxin antivenin backfire buffer corrective counteractant counteractive counteragent counterirritant countermeasure counterpoison counterstep cure drug medicament medication medicine neutralizer nullifier offset preventative preventive prophylactic remedy specific theriac theriaca