Source : Webster's Revised Unabridged Dictionary (1913)

Shallon \Shal"lon\, n. (Bot.)
   An evergreen shrub ({Gaultheria Shallon}) of Northwest
   America; also, its fruit. See {Salal-berry}.

Source : WordNet®

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