an E North American oak, Quercus macrocarpa, having fringed acorn cups and durable timber
bur oak in American English
US
a North American white oak (Quercus macrocarpa) having large acorns with fringed cups; mossy-cup oak
bur oak in American English
noun
an oak tree, Quercus macrocarpa, of eastern North America, having shiny, dark-green leaves, light-gray deeply ridged bark, and very large acorns with a fringed cup, yielding a hard, durable wood: the state tree of Illinois
Word origin
[1805–15, Amer.]This word is first recorded in the period 1805–15. Other words that entered Englishat around the same time include: backlash, diminishing returns, napoleon, phase, platinum