The Collaborative International Dictionary of English v.0.48:

Cebuan \Cebuan\ prop. n.
   1. An inhabitant of the island of Cebu; a member of the
      Visayan (or Bisayan) people of the Philippines.
      [WordNet 1.5]

   2. The language of the people of Cebu in the Philippines; its
      lexicon contributes to the official language of the
      Philippines.

   Syn: Cebuano.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Cebuan
    n 1: inhabitant of the island of Cebu; a member of the Visayan
         people of the Philippines
    2: language of the people of Cebu in the Philippines; its
       lexicon contributes to the official language of the
       Philippines [syn: Cebuan, Cebuano]