The Collaborative International Dictionary of English v.0.48:

Calif \Ca"lif\, n., Califate \Cal"i*fate\, n., etc.
   Same as Caliph, Caliphate, etc.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Caliph \Ca"liph\ (k[=a]"l[i^]f), n. [OE. caliphe, califfe, F.
   calife (cf. Sp. califa), fr. Ar. khal[imac]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.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

Calif.
    n 1: a state in the western United States on the Pacific; the
         3rd largest state; known for earthquakes [syn:
         California, Golden State, CA, Calif.]