http://en.wikipedia.org/wiki/Half-caste
/// Half-caste is a term for a category of people of mixed race or ethnicity.[1] It is derived from the term caste, which comes from the Latin castus, meaning pure, and the derivative Portuguese and Spanish casta, meaning race, and is generally considered offensive but not always (such as in New Zealand). ///
/// In today's United Kingdom, the term primarily applies to those of mixed Black and White parentage, but such was not always the case. In just about any area that fell under the crown's dominion, the term was made use of, and anyone of mixed Caucasian and conquered races could be properly described as being half-caste. As such, it did not necessarily carry any stigma with it.For some, the term half-caste is more offensive than mixed-race, even if the latter is suggestive of tainting and dilution of ethnicity. ///