The Collaborative International Dictionary
Culver's physic \Cul"ver's phys"ic\, or Culver's root \Cul"ver's root`\ [So called after a Dr. Culver, who used it.] (Bot.) The root of a handsome erect herb ( Leptandra Virginica syn. Veronica Virginica) common in most moist woods of North America, used as an active cathartic and emetic; also, the plant itself.