Fennel flower, Nigella damascena; = "love-in-a-mist".
Early 19th century. From love + in + a + puzzle. Compare earlier love-in-a-mist.
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。