From The Collaborative International Dictionary of English v.0.48 :
Egyptian \E*gyp"tian\, a. [L. Aegyptius, Gr. ?, fr. ? (L. Aegyptus) Egypt: cf. F. ['e]gyptien. Cf. Gypsy.] Pertaining to Egypt, in Africa. [1913 Webster] Egyptian bean. (Bot.) (a) The beanlike fruit of an aquatic plant ({Nelumbium speciosum), somewhat resembling the water lily. (b) See under Bean, 1. Egyptian cross. See Illust. (No. 6) of Cross. Egyptian+thorn+(Bot.),+a+medium-sized+tree+({Acacia+vera">Egyptian thorn (Bot.), a medium-sized tree ({Acacia vera). It is one of the chief sources of the best gum arabic. [1913 Webster]