1. any of a genus (Pyrola of the family Pyrolaceae, the wintergreen family) of evergreen perennial herbs (as the shinleafs) that have basal leaves and racemose flowers
a. any of a genus (Gaultheria) of evergreen plants of the heath family; especially a low creeping evergreen shrub (G. procumbens) of North America with white flowers and spicy red berries — compare checkerberry
(1) an essential oil from this plant
(2) the flavor of this oil <wintergreen lozenges>
New Collegiate Dictionary. 2001.