Sweet William Meaning, Definition & Usage

  1. noun Eurasian pink widely cultivated for its flat-topped dense clusters of varicolored flowers
    Dianthus barbatus.

WordNet

Definitions
  1. . (a) (Bot.) A species of pink (Dianthus barbatus) of many varieties. (b) (Zoöl.) The willow warbler. (c) (Zoöl.) The European goldfinch; called also sweet Billy. Prov. Eng.

Webster 1913