silky oak noun2 •Any of various trees and large shrubs in the family Proteaceae, especially Grevillea robusta or Cardwellia sublimis.If you drive north from Sydney to Brisbane you come to a natural border, some way south of the political one, where the first bunyas and hoop-pines and silky oaks begin to appear. — 1998 •The wood of these trees. formssilky oaks
