thə̇ˈrīəkə noun
( -s )
Etymology: New Latin, from Latin, antidote against poison — more at treacle
1. or theriaca an·drom·a·chi -an|drämə(ˌ)kē usually capitalized A
[ theriaca Andromachi from New Latin, literally, antidote of Andromachus (Greek physician of the emperor Nero)]
: an antidote to poison consisting typically of about 70 drugs pulverized and reduced with honey to an electuary — called also Venice treacle
2. Britain : treacle , molasses