noun
1. : any of several spruces: as
a. : a No. American spruce ( Picea glauca ) with short blue-green leaves and slender cones
b. : engelmann spruce
2. : the wood of a white spruce ; especially : the light pale tough straight-grained wood of the common white spruce ( Picea glauca ) which is used for construction and as a source of paper pulp