silver spruce sil·versp·ruce uncommon noun 1. tall spruce with blue-green needles and dense conic crown; older trees become columnar with lower branches sweeping downward SynonymsColorado spruceColorado blue sprucesilver sprucePicea pungens Related words Broader terms spruce WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
