Carol Bier Articles by Carol Bier INDIGO INDIGO (Pers. nil), the common name of a broad genus, Indigofera, with numerous species, widely distributed throughout Asia, Africa, and… GABBA GABBA (gava in Kurdish and Lori, Īzadpanāh, s.v.; ḵersak in Baḵtīārī, Digard, pp. 128-31), a hand-woven pile rug of coarse…