Any of several chiefly green parakeets of the genus Psittacula having a ring-shaped marking around the neck; now specifically the rose-ringed parakeet, P. krameri.
Origin
Early 19th century.
Definition of ring-necked parakeet in US English:
ring-necked parakeet
noun
Any of several chiefly green parakeets of the genus Psittacula having a ring-shaped marking around the neck; now specifically the rose-ringed parakeet, P. krameri.