noun.
A thick syrup produced in refining raw sugar and ranging from light to dark brown in color.
The Century Dictionary and Cyclopedia
noun.
The repellent fluid ejected from the mouths of grasshoppers and certain other insects when captured.
noun.
The uncrystallized syrup produced in the manufacture of sugar. It properly differs from treacle in that it comes from sugar in the process of making, while treacle is obtained in the process of refining: but the two words are often used synonymously.
the GNU version of the Collaborative International Dictionary of English
noun.
The thick, brown or dark colored, viscid, uncrystallizable sirup which drains from sugar, in the process of manufacture; any thick, viscid, sweet sirup made from vegetable juice or sap, as of the sorghum or maple. See treacle.