椈

(1)any of several large deciduous trees with rounded spreading crowns and smooth grey bark and small sweet edible triangular nuts enclosed in burs; north temperate regions

(2)丸い広がる樹冠となめらかな灰色の樹皮といがに囲まれた小さな甘い食用に適する三角形の堅果を持つ、いくつかの大きな落葉性の高木の総称

(3)北の温暖な地域