■ noun
1》 a bird of the crow family with boldly patterned plumage, typically with blue feathers in the wings or tail and a harsh chattering call. [ Garrulus glandarius (Eurasia) and other species.]
2》 informal, dated a person who talks trivially and at length.
Origin
C15: via OFr. from late L. gaius , gaia , perh. from the L. given name Gaius .