The Collaborative International Dictionary of English v.0.48:

Gaultheria \Gaul*the"ri*a\, n. [NL.] (Bot.)
   A genus of ericaceous shrubs with evergreen foliage, and,
   often, edible berries. It includes the American winter-green
   (Gaultheria procumbens), and the larger-fruited salal of
   Northwestern America (Gaultheria Shallon).
   [1913 Webster]

WordNet (r) 3.0 (2006):

salal
    n 1: small evergreen shrub of Pacific coast of North America
         having edible dark purple grape-sized berries [syn:
         salal, shallon, Gaultheria shallon]