An acorn cluster of the bur oak tree.
a North American white oak (Quercus macrocarpa) having large acorns with fringed cups; mossy-cup oak
A deciduous oak tree (Quercus macrocarpa) of eastern North America, having deeply lobed leaves, acorns enclosed within a deep fringed cup, and hard durable wood.
(plural bur oaks)
- Quercus macrocarpa.