1. (n.)spruce pine a tallpine tree, Pinus glabra, of the southeastern U.S., having furrowed gray bark and needles in bundles of two.
2. spruce pine any of several other pines, spruces, and hemlocks.
Etymology: (1675–85, Amer.)
Definition of 'spruce pine'
Princeton's WordNet
1. (noun)eastern hemlock, Canadian hemlock, spruce pine, Tsuga canadensis common forest tree of the eastern United States and Canada; used especially for pulpwood
2. (noun)black spruce, Picea mariana, spruce pine small spruce of boggy areas of northeastern North America having spreading branches with dense foliage; inferior wood
3. (noun)shore pine, lodgepole, lodgepole pine, spruce pine, Pinus contorta shrubby two-needled pine of coastal northwestern United States; red to yellow-brown bark fissured into small squares
4. (noun)spruce pine, Pinus glabra large two-needled pine of southeastern United States with light soft wood