Any of several large deciduous trees with rounded spreading crowns and smooth gray bark and small sweet edible triangular nuts enclosed in burs; north temperate regions.

• 几种高大落叶树的任何一种,圆形伸展树冠，树皮光滑，灰色，小的三角形的坚果由壳斗围着，香甜可食，生长于北部温带地区。