Pleurisy root Meaning, Definition & Usage

noun erect perennial of eastern and southern United States having showy orange flowers
butterfly weed; Indian paintbrush; chigger flower; tuber root; chiggerflower; Asclepias tuberosa; orange milkweed.

WordNet

Definitions

. (Bot.) (a) The large tuberous root of a kind of milkweed (Asclepias tuberosa) which is used as a remedy for pleuritic and other diseases . (b) The plant itself, which has deep orange-colored flowers; called also butterfly weed.

Webster 1913

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