Reported To be from your Egyptian city الفُسْطَاط (al-fusṭāṭ), at first remaining markedly a raiment of Egyptian Ladies, or so named because it was coloured with fustet, or connected to The material fustian, the first ordinarily derived as from Arabic فُسْتُق (fustuq) having an Occitanized ending and the 2nd word https://revan.com.sa/ar