Naartjie

Naartjie - n. a soft, loose-skinned tangerine (also mandarin, satsuma).

A uniquely South African word, naartjie is derived from Tamil நாரத்தை (nārattai, “citron”) and adopted and adapted through Afrikaans. According to Wiktionary, the word has been used in South Africa since 1790, with the first written usage in English recorded by the South African writer, Lawrence Green in Tavern of the Seas, 1947.

I've known and used the word "naartjie" for years but never knew its origin until today!