The Collaborative International Dictionary of English v.0.48:

Cayugas \Ca*yu"gas\, n. pl.; sing. Cayuga. (Ethnol.)
   A tribe of Indians formerly inhabiting western New-York,
   forming part of the confederacy called the Five Nations.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Cayuga
    n 1: a member of an Iroquoian people formerly living around
         Cayuga Lake in New York State
    2: the Iroquoian language spoken by the Cayuga

U.S. Gazetteer Counties (2000):

Cayuga -- U.S. County in New York
   Population (2000):    81963
   Housing Units (2000): 35477
   Land area (2000):     693.184873 sq. miles (1795.340503 sq. km)
   Water area (2000):    170.457216 sq. miles (441.482145 sq. km)
   Total area (2000):    863.642089 sq. miles (2236.822648 sq. km)
   Located within:       New York (NY), FIPS 36
   Location:             42.933530 N, 76.564638 W
   Headwords:
    Cayuga
    Cayuga, NY
    Cayuga County
    Cayuga County, NY


U.S. Gazetteer Places (2000):

Cayuga, NY -- U.S. village in New York
   Population (2000):    509
   Housing Units (2000): 240
   Land area (2000):     0.918061 sq. miles (2.377767 sq. km)
   Water area (2000):    0.427275 sq. miles (1.106638 sq. km)
   Total area (2000):    1.345336 sq. miles (3.484405 sq. km)
   FIPS code:            13068
   Located within:       New York (NY), FIPS 36
   Location:             42.918509 N, 76.727079 W
   ZIP Codes (1990):     13034
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Cayuga, NY
    Cayuga


U.S. Gazetteer Places (2000):

Cayuga, ND -- U.S. city in North Dakota
   Population (2000):    61
   Housing Units (2000): 32
   Land area (2000):     0.987001 sq. miles (2.556321 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.987001 sq. miles (2.556321 sq. km)
   FIPS code:            13020
   Located within:       North Dakota (ND), FIPS 38
   Location:             46.074752 N, 97.386725 W
   ZIP Codes (1990):     58013
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Cayuga, ND
    Cayuga


U.S. Gazetteer Places (2000):

Cayuga, OK -- U.S. Census Designated Place in Oklahoma
   Population (2000):    105
   Housing Units (2000): 57
   Land area (2000):     7.201547 sq. miles (18.651920 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    7.201547 sq. miles (18.651920 sq. km)
   FIPS code:            12915
   Located within:       Oklahoma (OK), FIPS 40
   Location:             36.630401 N, 94.644267 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Cayuga, OK
    Cayuga


U.S. Gazetteer Places (2000):

Cayuga, IN -- U.S. town in Indiana
   Population (2000):    1109
   Housing Units (2000): 517
   Land area (2000):     1.001951 sq. miles (2.595042 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    1.001951 sq. miles (2.595042 sq. km)
   FIPS code:            10954
   Located within:       Indiana (IN), FIPS 18
   Location:             39.947128 N, 87.464854 W
   ZIP Codes (1990):     47928
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Cayuga, IN
    Cayuga