senega

noun

1. the dried root of a milkwort, Polygala senega, of the eastern U.S., used as an expectorant and diuretic.
2. the plant itself.

noun

1. a milkwort plant, Polygala senega, of the eastern US, with small white flowers
2. the root of this plant, used as an expectorant

n.

1. The dried roots of the Seneca snakeroot, used medicinally as an expectorant.