any evergreen plant of the genus Chimaphila, esp. C. umbellata, the leaves of which are used medicinally for their tonic, diuretic, and astringent properties.
Main Entry: pip·sis·se·wa Pronunciation: pip-'sis-&-"wo Function: noun : any of a genus (Chimaphila, especially C.umbellata) of evergreen herbs of the wintergreen family (Pyrolaceae) with astringent leaves used as a tonic and diuretic
[pip-sis-uh-wuh, -waw] 
