white oak

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Any of several oak trees with leaves that do not have sharp tips, especially Quercus alba of eastern North America, having hard, light-colored wood.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun An oak tree with rounded leaf lobes, native to eastern North America, Quercus alba.
• noun An oak tree in a subgenus, Quercus subgenus Quercus, the type species of which is Quercus alba.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun 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