Bullfinch \Bull"finch`\, n. (Zo["o]l.) A bird of the genus {Pyrrhula} and other related genera, especially the {P. vulgaris or rubicilla}, a bird of Europe allied to the grosbeak, having the breast, cheeks, and neck, red. Note: As a cage bird it is highly valued for its remarkable power of learning to whistle correctly various musical airs. {Crimson-fronted bullfinch}. (Zo["o]l.) See {Burion}. {Pine bullfinch}, the pine finch.