Swarths, spelled as /swɔːθs/, is a plural form of the noun swarth, which is an archaic word for a black or dark-skinned person or a shadow or a dark patch. The spelling of this word may cause confusion as it appears to have an unnecessary "h" in the middle. However, this is due to the word's Middle English origin, where the "h" was pronounced and written. Therefore, even though it may seem odd to modern English speakers, swarths is the correct spelling of the word.