wallflower

/W AO1 L F L AW0 ER0/
noun
  1. 1

    Any of several short-lived herbs or shrubs of the Erysimum genus with bright yellow to red flowers.

  2. 2

    Gastrolobium grandiflorum, a poisonous bushy shrub, endemic to Australia.

  3. 3

    A person who is socially awkward, especially one who does not dance at a party due to shyness.

verb
  1. 1

    To stand shyly apart from a dance, waiting to be asked to join in.

Source: https://en.wiktionary.org/wiki/wallflower