any of numerous plants of the genus Erysimum having fragrant yellow or orange or brownish flowers
perennial of southern Europe having clusters of fragrant flowers of all colors especially yellow and orange; often naturalized on old walls or cliffs; sometimes placed in genus Erysimum
remains on sidelines at social event
例句
用作名词(n.)
She spent the whole evening being a wallflower.她整个晚上都当壁花。
