Baretti: A dictionary of the English and Italian languages
Schíer-a, s. f. dim. Schíer-étta,
1. battalions, ranks, files of soldiers drawn up in battle array. Far —, to set in array; 2. band, company, gang.Una — d'uccelli, a flight of birds; 3. row, alley. Una — d'alberi, a row or alley of trees. A —, by bands or companies. A — a —, by files.
Florio: a worlde of wordes, or most copious, dictionarie in Italian and English
schiera: a troupe, a squadron, a ranke or a band of men, a cornet of horsemen. Also any orderly multitude. Also a row or ranke namely of trees.