pin oak

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

• noun A deciduous oak tree (Quercus palustris) of eastern North America, having horizontal or drooping branches, deeply lobed leaves with sharp tips, and small acorns.

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

• noun fast-growing medium to large pyramidal deciduous tree of northeastern United States and southeastern Canada having deeply pinnatifid leaves that turn bright red in autumn; thrives in damp soil
• noun large nearly semi-evergreen oak of southeastern United States; thrives in damp soil