What does "grackle" mean?

Grackle: (a) One of several American blackbirds, of the family Icteridæ; as, the rusty grackle (Scolecophagus Carolinus); the boat-tailed grackle (see Boat-tail); the purple grackle (Quiscalus quiscula, or Q. versicolor). See Crow blackbird, under Crow. (b) An Asiatic bird of the genus Gracula. See Myna.