Any of several South American trees belonging to the cashew family, with very hard, tannin-rich wood; chiefly the red quebracho (S. lorentzii), used in the tanning of leather. (Genus Schinopsis, family Anacardiaceae.)
The points of the star represent the first seven verses of the Koran. Red, black, white, and green became the pan-Arab colours. Effective date: 16 April 1928.