noun, plural scam·mo·nies.
- a twining, Asian convolvulus, Convolvulus scammonia.
noun plural -nies
- a twining Asian convolvulus plant, Convolvulus scammonia, having arrow-shaped leaves, white or purple flowers, and tuberous roots
- a resinous juice obtained from the roots of this plant and having purgative properties
- any of various similar medicinal resins or the plants that yield them