pleurisy root


noun

a North American milkweed, Asclepias tuberosa, whose root was used as a remedy for pleurisy.
the root.

Origin of pleurisy root

An Americanism dating back to 1775–85

British Dictionary definitions for pleurisy root

pleurisy root

noun

the root of the butterfly weed, formerly used as a cure for pleurisy
another name for butterfly weed