WordNet sense 1 (large valuable arborvitae of northwestern United States):

western red cedar, canoe cedar, Thuja plicata

WordNet sense 2 (small juniper found east of Rocky Mountains having a conic crown, brown bark that peels in shreds, and small sharp needles):

eastern red cedar, Juniperus virginiana, red juniper

WordNet sense 3 (tall tree of the Pacific coast of North America having foliage like cypress and cinnamon-red bark):

incense cedar, Calocedrus decurrens, Libocedrus decurrens