Bū_ṭayrah: (Arabic, bū: diminutive of abū: father, ṭayr: bird). The term is used in the UAE to refer to a Chinese silk fabric, embroidered in floral motifs resembling birds in flight. It’s a sheer light format used for overgarments (athwāb), while the opaque Satin silk is used for tunics (kanādīr) and the lower more visible parts of underpants (sarāwīl).