カササギの鳴き声を模した擬音語だが、地元ベネチアの小銅貨のことでもある。新聞との関連については議論があり、ニュースボーイを小さなカササギにたとえる説と、新聞1紙がちょうど1枚の小さな銅貨の価値があることからこの名がついたという説がある。
We are indebted to the Italians for the idea of newspapers. The title of their gazettas was, perhaps, derived from gazzera, a magpie or chatterer; or, more probably, from a farthing coin, peculiar to the city of Venice, called gazetta, which was the common price of the newspapers. Another etymologist is for deriving it from the Latin gaza, which would colloquially lengthen into gazetta, and signify a little treasury of news. The Spanish derive it from the Latin gaza, and likewise their gazatero, and our gazetteer, for a writer of the gazette and, what is peculiar to themselves, gazetista, for a lover of the gazette. [Isaac Disraeli, "Curiosities of Literature," 1835]
Gazzetta It., Sp. gazeta, Fr. E. gazette; prop. the name of a Venetian coin (from gaza), so in Old English. Others derive gazette from gazza a magpie, which, it is alleged, was the emblem figured on the paper; but it does not appear on any of the oldest Venetian specimens preserved at Florence. The first newspapers appeared at Venice about the middle of the 16th century during the war with Soliman II, in the form of a written sheet, for the privilege of reading which a gazzetta (= a crazia) was paid. Hence the name was transferred to the news-sheet. [T.C. Donkin, "Etymological Dictionary of the Romance Languages" (based on Diez), 1864]
GAZETTE. A paper of public intelligence and news of divers countries, first printed at Venice, about the year 1620, and so called (some say) because una gazetta, a small piece of Venetian coin, was given to buy or read it. Others derive the name from gazza, Italian for magpie, i.e. chatterer.--Trusler. A gazette was printed in France in 1631; and one in Germany in 1715. [Haydn's "Dictionary of Dates," 1857]