柯林斯词典cottonwood /ˈkɒtənˌwʊd/ (cottonwoods) 1. N-COUNT A cottonwood or a cottonwood tree is a kind of tree that has seeds that are covered with hairs that look like cotton. 棉白楊; 三葉楊 返回 cottonwood剑桥词典a North American tree whose seeds are covered with hairs that look like cotton （北美）棉白楊，三角葉楊 返回 cottonwood