Definition of grackle
1a songbird of the American blackbird family, the male of which has shiny black plumage with a blue-green sheen.
- Several genera and species, family Icteridae, in particular the common grackle (Quiscalus quiscula)
2another term for an Asian mynah or starling, with mainly black plumage.
- Gracula and other genera, family Sturnidae; southern grackle is another term for grackle (see mynah)