0 the number 1,000,000,000 -- miliardo
1 often in the United Kingdom, the number 1,000,000,000,000; in the United States, and often in the United Kingdom, the number 1,000,000,000 -- bilione, miliardo
a billion
several billion.
2 often in the United Kingdom, the figure 1,000,000,000,000; in the United States, and often in the United Kingdom, the figure 1,000,000,000. -- bilione, miliardo
3 a billion pounds or dollars -- bilione, miliardo