jay /dʒeɪ 
/ ▸ noun 1 a bird of the crow family with boldly patterned plumage, typically having blue feathers in the wings or tail. Family Corvidae: several genera and numerous species, in particular the Eurasian Garrulus glandarius, with a crest, mainly pinkish-brown plumage, and a harsh screech.
2 informal, dated a person who talks at length in a foolish or impertinent way. – ORIGIN late 15th century: via Old French from late Latin gaius, gaia, perhaps from the Latin given name Gaius.
EnglishOxford Dictionary of English
