1. (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

• american white oak
• quercus alba
• arizona white oak
• quercus arizonica
• bur oak
• burr oak
• mossy-cup oak
• mossycup oak
• quercus macrocarpa
• california white oak
• quercus lobata
• roble
• valley oak
• valley white oak
• common oak
• english oak
• pedunculate oak
• quercus robur
• durmast
• quercus petraea
• quercus sessiliflora
• garry oak
• oregon oak
• oregon white oak
• quercus garryana
• quercus bicolor
• swamp oak
• swamp white oak

1. (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

• oak
• oak tree