Meaning

noun a vain and talkative person (chatters like a parrot)

noun an archaic term for a parrot

originFrom Middle English popinjay, popyngeay, popingay, popejay, from Anglo-Norman papegai, papejoie et al., (northern) Old French papejai (“parrot”), probably from Old Occitan papagay (compare Occitan papagai, Catalan papagai), ultimately from Arabic بَبْغَاء (babḡāʔ, “parrot”), of imitative origin.

Etymology from Wiktionary, CC BY-SA 3.0