The Collaborative International Dictionary of English v.0.48:

Scheik \Scheik\ (sh[=e]k or sh[=a]k), n.
   See Sheik.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Sheik \Sheik\, n. [Ar. sheikh, shaykh, a venerable old man, a
   chief, fr. sh[=a]kha 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