| Noun | 1. | white pine - any of several five-needled pines with white wood and smooth usually light grey bark when young; especially the eastern white pine white pine - soft white wood of white pine trees American white pine, eastern white pine, Pinus strobus, weymouth pine - tall-growing pine of eastern North America; bark is brown with longitudinal fissures when mature; valued as a timber tree Pinus monticola, western white pine, mountain pine, silver pine - tall pine of western North America with stout blue-green needles; bark is grey-brown with rectangular plates when mature Pinus strobiformis, southwestern white pine - medium-size pine of northwestern Mexico; bark is dark brown and furrowed when mature limber pine, Pinus flexilis - western North American pine with long needles and very flexible limbs and dark-grey furrowed bark Pinus albicaulis, whitebark pine, whitebarked pine - small pine of western North America; having smooth grey-white bark and soft brittle wood; similar to limber pine |
| 2. | white pine - soft white wood of white pine treespine - straight-grained durable and often resinous white to yellowish timber of any of numerous trees of the genus Pinus white pine - any of several five-needled pines with white wood and smooth usually light grey bark when young; especially the eastern white pine |