BUSCA, a town of Italy, in the province of Cuneo, 9 miles from the city of that name, on the left bank of the Macra, a confluent of the Po. It contains a college, a hospital, and two botanic gardens. The inhabitants are engaged in the culture of the silkworm and the manufacture of leather and ironwares; and there are marble and alabaster quarries. It is the site of some Roman antiquities. Population, 9533.