heliotrope

heliotrope
/ˈhi:lɪətrəup; `hilɪəˌtrop/ n
1 [C, U] plant with small sweet-smelling purple flowers 天芥菜属植物（开芳香之紫色小花）.
2 [U] light purple colour 浅紫色.

牛津英汉双解词典