Noun pin oak has 2 senses
  1. pin oak, swamp oak, Quercus palustris - 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
    --1 is a kind of oak, oak tree
  2. laurel oak, pin oak, Quercus laurifolia - large nearly semi-evergreen oak of southeastern United States; thrives in damp soil
    --2 is a kind of oak, oak tree
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