The Collaborative International Dictionary of English v.0.48:

McKinley \McKinley\ prop. n.
   Mount McKinley, the highest peak in North America; 20,300
   feet high; also called by the native name Denali.

   Syn: Mt. McKinley, Denali.
        [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

Denali \Denali\ prop. n.
   1. The native name for Mount McKinley in Alaska, translated
      as the great one.

   Syn: Mount McKinley.
        [PJC]

   2. a national park in Alaska in which Mount McKinley is
      located.

   Syn: Denali national park.
        [PJC]

WordNet (r) 3.0 (2006):

Denali
    n 1: a mountain in south central Alaska; the highest peak in
         North America (20,300 feet high) [syn: McKinley, Mount
         McKinley, Mt. McKinley, Denali]