WordNet (r) 3.0 (2006):

shell parakeet
    n 1: small Australian parakeet usually light green with black
         and yellow markings in the wild but bred in many colors
         [syn: budgerigar, budgereegah, budgerygah, budgie,
         grass parakeet, lovebird, shell parakeet,
         Melopsittacus undulatus]