wallflower

noun

1. any of numerous plants of the genus Erysimum having fragrant yellow or orange or brownish flowers

   noun.plant

   Source: WordNet 3.0

2. 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

   noun.plant

   Synonyms cheiranthus cheiri erysimum cheiri

   Source: WordNet 3.0

3. remains on sidelines at social event

   noun.person

   Source: WordNet 3.0

4. A perennial, cruciferous plant (<i>Cheiranthus Cheiri</i>), with sweet-scented flowers varying in color from yellow to orange and deep red. In Europe it very common on old walls.

   noun

   Source: webster1913

5. In Australia, the desert poison bush (<i>Gastrolobium grandiflorum</i>); -- called also <i>native wallflower</i>.

   noun

   Source: webster1913