| Noun | 1. | white oak - any of numerous Old World and American oaks having 6 to 8 stamens in each floret, acorns that mature in one year and leaf veins that never extend beyond the margin of the leaf oak tree, oak - a deciduous tree of the genus Quercus; has acorns and lobed leaves; "great oaks grow from little acorns" American white oak, Quercus alba - large slow-growing deciduous tree of the eastern United States having stout spreading branches and leaves with usually 7 rounded lobes; yields strong and durable hard wood Arizona white oak, Quercus arizonica - semi-evergreen shrub or small tree of Arizona and New Mexico having acorns with hemispherical cups Quercus bicolor, swamp white oak, swamp oak - large deciduous oak of the eastern United States with a flaky bark and leaves that have fewer lobes than other white oaks; yields heavy strong wood used in construction; thrives in wet soil Garry oak, Oregon oak, Oregon white oak, Quercus garryana - small deciduous tree of western North America with crooked branches and pale grey bark California white oak, Quercus lobata, valley oak, valley white oak, roble - tall graceful deciduous California oak having leathery leaves and slender pointed acorns bur oak, burr oak, mossycup oak, mossy-cup oak, Quercus macrocarpa - medium to large deciduous oak of central and eastern North America with ovoid acorns deeply immersed in large fringed cups; yields tough close-grained wood durmast, Quercus petraea, Quercus sessiliflora - deciduous European oak valued for its tough elastic wood common oak, English oak, pedunculate oak, Quercus robur - medium to large deciduous European oak having smooth leaves with rounded lobes; yields hard strong light-colored wood |