Bolo is Spanish for "ball" or "bun." This dessert, also called bollo, has been throughly assimilated into the Italian baking repertoire. Every region seems to have a version of the fabulous sweet bread. It is called busola in the Veneto, buccellato in most of Tuscany, and ciambella in the town of Lucca. Buccellato means "bracelet," and the name comes from the fact that the cake is traditionally formed into a ring. I have found recipes for this in Tunisian cookbooks as well, due to the many Livornese Jews who settled there.