'pin oak' definitions:
Definition of 'pin oak'
(from WordNet)
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 [syn: pin oak, swamp oak, Quercus palustris]
noun
Large nearly semi-evergreen oak of southeastern United States; thrives in damp soil [syn: laurel oak, pin oak, Quercus laurifolia]