Arpeggio (a˙r-pej´ō), the distinct sound of the notes of an instrumental chord; the striking the notes of a chord in rapid succession, as in the manner of touching the harp instead of playing them simultaneously.

Arpent (a˙r-pän˙), formerly a French measure of land, equal to five-sixths of an English acre; but it varied in different parts of France; the Parisian arpent contained 32,400 sq. feet, the common arpent 40,000 sq. feet.

Arpino (a˙r-pē´nō; ancient Arpinum), a town of Southern Italy, province of Caserta, celebrated as the birthplace of Gaius Marius and Cicero. It manufactures woollens, linen, paper, &c. Pop. 10,309.

Arqua (a˙r´kwa˙), a village of Northern Italy, about 13 miles south-west of Padua, where the poet Petrarch died, 18th July, 1374. A monument has been erected over his grave. Pop. 1700.

Ar´quebus, a hand-gun; a species of fire-arm of the sixteenth century, resembling a musket. It was fired from a forked rest, and sometimes

cocked by a wheel, and carried a ball that weighed nearly 2 ounces. A larger kind used in fortresses carried a heavier shot.

Arraca´cha. See Aracacha.

Arracan´. See Aracan.

Ar´rack. See Arack.

Ar´ragon. See Aragon.