The Collaborative International Dictionary of English. 2000.
Spiraea opulifolia — Nine bark Nine bark , n. (Bot.) A white flowered rosaceous shrub ({Neillia opulifolia}, or {Spir[ae]a opulifolia}), common in the Northern United States. The bark separates into many thin layers, whence the name. [1913 Webster] … The Collaborative International Dictionary of English
Nine-bark — n. (Bot.) A white flowered rosaceous shrub ({Neillia opulifolia}, or {Spir[ae]a opulifolia}), common in the Northern United States. The bark separates into many thin layers, whence the name. [1913 Webster] … The Collaborative International Dictionary of English
