n. Prepared leaves or bark of certain plants; -- used by
the Indians of the Northwest for smoking, either mixed with tobacco or
as a substitute for it. Also, a plant so used, as the osier cornel
(Cornus stolonijra), and the bearberry (Arctostaphylus Uva-ursi).
n. [美国英语]；(早期北美印第安人用树叶、树皮、烟草等制成的)烟草代用品