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.
[Webster 1913 Suppl.]