I have only heard that term used in the UK, not in the US. I think that usage of naught/nought for zero in British English is pretty standard. In the US, it c

I have only heard that term used in the UK, not in the US. I think that usage of naught/nought for zero in British English is pretty standard. In the US, it can be used to mean "nothing" (e.g. "all for naught") but not zero.