cingalese

from The Century Dictionary.

• Pertaining to the island of Ceylon, or to its principal native race. See Ceylonese.
• noun singular and plural A member or members of the principal native race of Ceylon; the primitive races of Ceylon collectively.
• noun The language of the people of Ceylon.
• noun Also Sinhalese.

from the GNU version of the Collaborative International Dictionary of English.

• noun A native or natives of Ceylon descended from its primitive inhabitants.