A blue-flowered, very bristly comfrey, Symphytum asperum, native to the Caucasus and grown elsewhere for ornament and formerly as a fodder plant.
Mid 19th century; earliest use found in Chambers's Encyclopaedia.
英汉双解词典包含464360条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。