[kɑ:'li:f]
n.
(=caliph)哈里发(伊斯兰教国家政教领袖的尊称)

[ noun ]
the civil and religious leader of a Muslim state considered to be a representative of Allah on earth
<noun.person>
many radical Muslims believe a Khalifah will unite all Islamic lands and people and subjugate the rest of the world

Caliph \Ca"liph\ (k[=a]"l[i^]f), n. [OE. caliphe, califfe, F.
calife (cf. Sp. califa), fr. Ar. khal[=i]fan successor, fr.
khalafa to succed (i. e. a successor of Mohammed).]
Successor or vicar; the civil and religious leader of a
Muslim state; -- a title of the successors of Mohammed both
as temporal and spiritual rulers, used formerly by the
sultans of Turkey. [Written also {calif}, {kaliph}, {kalif},
{khalif}.]