budgerigar n small Australian parakeet usually light green with black and yellow markings in the wild but bred in many colors Usage(s) As owner of the famous talking budgerigar, Blue Boy, my attention was naturally arrested by your Bill and Coo Cinema review PTI, April 12. A caged budgerigar chirps beneath Rembrandt's The Cradle. Synonym(s) budgereegah budgerygah budgie grass parakeet lovebird shell parakeet Melopsittacus undulatus