Wordnet 3.0
NOUN (3)
1. 
 a member of the Muskhogean people formerly living in Georgia and eastern Alabama and constituting the core of the Creek Confederacy; 
2. 
 a town in eastern Oklahoma on the Arkansas River; 
3. 
 the Muskhogean language spoken by the Muskogee; 
The Collaborative International Dictionary of English v.0.48:
Muskogees \Mus*ko"gees\, n. pl.; sing. Muskogee. (Ethnol.)
   A powerful tribe of North American Indians that formerly
   occupied the region of Georgia, Florida, and Alabama. They
   constituted a large part of the Creek confederacy. [Written
   also Muscogees.]
   [1913 Webster]
WordNet (r) 3.0 (2006):
Muskogee
    n 1: a member of the Muskhogean people formerly living in
         Georgia and eastern Alabama and constituting the core of
         the Creek Confederacy
    2: a town in eastern Oklahoma on the Arkansas River
    3: the Muskhogean language spoken by the Muskogee
U.S. Gazetteer Counties (2000):
Muskogee -- U.S. County in Oklahoma
   Population (2000):    69451
   Housing Units (2000): 29575
   Land area (2000):     813.845244 sq. miles (2107.849416 sq. km)
   Water area (2000):    25.140718 sq. miles (65.114158 sq. km)
   Total area (2000):    838.985962 sq. miles (2172.963574 sq. km)
   Located within:       Oklahoma (OK), FIPS 40
   Location:             35.686587 N, 95.367134 W
   Headwords:
    Muskogee
    Muskogee, OK
    Muskogee County
    Muskogee County, OK
U.S. Gazetteer Places (2000):
Muskogee, OK -- U.S. city in Oklahoma
   Population (2000):    38310
   Housing Units (2000): 17517
   Land area (2000):     37.338116 sq. miles (96.705272 sq. km)
   Water area (2000):    1.426447 sq. miles (3.694481 sq. km)
   Total area (2000):    38.764563 sq. miles (100.399753 sq. km)
   FIPS code:            50050
   Located within:       Oklahoma (OK), FIPS 40
   Location:             35.746617 N, 95.368047 W
   ZIP Codes (1990):     74401 74403
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Muskogee, OK
    Muskogee