The Collaborative International Dictionary of English v.0.48:

Pollock \Pol"lock\, n. [See Pollack.] (Zool.)
   A marine gadoid fish (Pollachius carbonarius), native both
   of the European and American coasts. It is allied to the cod,
   and like it is salted and dried. In England it is called
   coalfish, lob, podley, podling, pollack, etc.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Pollock
    n 1: United States artist famous for painting with a drip
         technique; a leader of abstract expressionism in America
         (1912-1956) [syn: Pollock, Jackson Pollock]
    2: lean white flesh of North Atlantic fish; similar to codfish
       [syn: pollack, pollock]
    3: important food and game fish of northern seas (especially the
       northern Atlantic); related to cod [syn: pollack,
       pollock, Pollachius pollachius]

U.S. Gazetteer Places (2000):

Pollock, MO -- U.S. village in Missouri
   Population (2000):    131
   Housing Units (2000): 62
   Land area (2000):     0.166505 sq. miles (0.431247 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.166505 sq. miles (0.431247 sq. km)
   FIPS code:            58898
   Located within:       Missouri (MO), FIPS 29
   Location:             40.359023 N, 93.084303 W
   ZIP Codes (1990):     63560
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Pollock, MO
    Pollock


U.S. Gazetteer Places (2000):

Pollock, SD -- U.S. town in South Dakota
   Population (2000):    339
   Housing Units (2000): 204
   Land area (2000):     0.319398 sq. miles (0.827238 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.319398 sq. miles (0.827238 sq. km)
   FIPS code:            51260
   Located within:       South Dakota (SD), FIPS 46
   Location:             45.899975 N, 100.288405 W
   ZIP Codes (1990):     57648
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Pollock, SD
    Pollock


U.S. Gazetteer Places (2000):

Pollock, LA -- U.S. town in Louisiana
   Population (2000):    376
   Housing Units (2000): 204
   Land area (2000):     1.258709 sq. miles (3.260041 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    1.258709 sq. miles (3.260041 sq. km)
   FIPS code:            61580
   Located within:       Louisiana (LA), FIPS 22
   Location:             31.524760 N, 92.408866 W
   ZIP Codes (1990):     71467
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Pollock, LA
    Pollock