What does "kinnikinic" mean?

Kinnikinic: 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). [Spelled also kinnickinnick and killikinick.]