[1] : The Collaborative International Dictionary of English v.0.48

sheik \sheik\, n. ar. sheikh, shaykh, a venerable old man, a
   chief, fr. sh=akha to grow or be old.
   the head of an arab family, or of a clan or a tribe; also,
   the chief magistrate of an arab village. the name is also
   applied to mohammedan ecclesiastics of a high grade. written
   also scheik, shaik, sheikh.
   1913 webster sheil
see also:
scheik shaik sheikh 

[2] : WordNet (r) 2.0

sheik
     n 1: the leader of an arab village or family syn: tribal sheik,
           sheikh, tribal sheikh, arab chief
     2: a man who is much concerned with his dress and appearance
        syn: dandy, dude, fop, gallant, beau, swell,
        fashion plate, clotheshorse
see also:
tribal sheik sheikh tribal sheikh arab chief dandy dude 
fop gallant beau swell fashion plate 
clotheshorse 

[3] : Moby Thesaurus II by Grady Ward, 1.0

28 moby thesaurus words for "sheik":
   casanova, don juan, lothario, romeo, amoroso, beau, boyfriend,
   caballero, cavalier, cavaliere servente, esquire, fellow, flame,
   gallant, gigolo, inamorato, lady-killer, love-maker, man, necker,
   old man, petter, philanderer, seducer, squire, sugar daddy, swain,
   young man

Sheik >> S Words
Sheik, definition of term: Sheik
sheik_pag1.html