| picea | (n) a genus of temperate and Arctic evergreen trees (see spruce), Syn. genus Picea |
| balsam woolly aphid | (n) a variety of adelgid, Syn. Adelges piceae |
| black spruce | (n) small spruce of boggy areas of northeastern North America having spreading branches with dense foliage; inferior wood, Syn. Picea mariana, spruce pine |
| colorado spruce | (n) tall spruce with blue-green needles and dense conic crown; older trees become columnar with lower branches sweeping downward, Syn. Colorado blue spruce, silver spruce, Picea pungens |
| engelmann spruce | (n) tall spruce of Rocky Mountains and British Columbia with blue-green needles and acutely conic crown; wood used for rough lumber and boxes, Syn. Picea engelmannii, Engelmann's spruce |
| norway spruce | (n) tall pyramidal spruce native to northern Europe having dark green foliage on spreading branches with pendulous branchlets and long pendulous cones, Syn. Picea abies |
| oriental spruce | (n) evergreen tree of the Caucasus and Asia Minor used as an ornamental having pendulous branchlets, Syn. Picea orientalis |
| red spruce | (n) medium-sized spruce of eastern North America; chief lumber spruce of the area; source of pulpwood, Syn. yellow spruce, eastern spruce, Picea rubens |
| siberian spruce | (n) tall spruce of northern Europe and Asia; resembles Norway spruce, Syn. Picea obovata |
| sitka spruce | (n) a large spruce that grows only along the northwestern coast of the United States and Canada; has sharp stiff needles and thin bark; the wood has a high ratio of strength to weight, Syn. Picea sitchensis |
| weeping spruce | (n) medium-sized spruce of California and Oregon having pendulous branches, Syn. Brewer's spruce, Picea breweriana |
| white spruce | (n) medium-sized spruce of northeastern North America having short blue-green leaves and slender cones, Syn. Picea glauca |