wall·flow·er
noun/ˈwɔːlflaʊə(r)/
/ˈwɔːlflaʊər/
- a garden plant with yellow, orange or red flowers with a sweet smell that appear in late spring
桂竹香（一种园艺植物，暮春开花，呈黄、橙或红色） - (informal) a person who does not dance at a party because they do not have somebody to dance with or because they are too shy
（舞会或聚会上因无舞伴或腼腆）待在一旁的人，壁花