(chiefly Britain) A syrupy byproduct of sugar refining; molasses or golden syrup. / Cloying sentimental speech. / (Cockney rhyming slang) Sweetheart (from treacle tart).

To apply treacle to a surface, so as to catch flies or moths, etc.

plural of treacle

Covered with treacle.

present participle of treacle

Paper covered in treacle, meant to attract and catch flies.

(archaic) Synonym of theriac.

(archaic, medicine) A compound cordial prepared in different ways from a variety of ingredients, such as hartshorn, flowers, the roots and juices of various plants, wines, etc., distilled or digested with Venice treacle.

Any of several species of the cruciferous genus Erysimum, especially Erysimum cheiranthoides, which was formerly used as an ingredient in Venice treacle, or theriac.

plural of treacle paper