The Collaborative International Dictionary of English v.0.48:

Sedan \Se*dan"\, n. [Said to be named from Sedan, in France,
   where it was first made, and whence it was introduced into
   England in the time of King Charles I.]
   A portable chair or covered vehicle for carrying a single
   person, -- usually borne on poles by two men. Called also
   sedan chair.
   [1913 Webster]

WordNet (r) 3.0 (2006):

sedan
    n 1: a car that is closed and that has front and rear seats and
         two or four doors [syn: sedan, saloon]
    2: a closed litter for one passenger [syn: sedan, sedan
       chair]

U.S. Gazetteer Places (2000):

Sedan, KS -- U.S. city in Kansas
   Population (2000):    1342
   Housing Units (2000): 652
   Land area (2000):     0.783602 sq. miles (2.029519 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.783602 sq. miles (2.029519 sq. km)
   FIPS code:            63750
   Located within:       Kansas (KS), FIPS 20
   Location:             37.128472 N, 96.186220 W
   ZIP Codes (1990):     67361
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Sedan, KS
    Sedan


U.S. Gazetteer Places (2000):

Sedan, MN -- U.S. city in Minnesota
   Population (2000):    65
   Housing Units (2000): 31
   Land area (2000):     0.506876 sq. miles (1.312804 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.506876 sq. miles (1.312804 sq. km)
   FIPS code:            59188
   Located within:       Minnesota (MN), FIPS 27
   Location:             45.577341 N, 95.247236 W
   ZIP Codes (1990):     56380
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Sedan, MN
    Sedan