The Collaborative International Dictionary of English v.0.48:

Swink \Swink\, v. i. [imp. Swank, Swonk; p. p. Swonken; p.
   pr. & vb. n. Swinking.] [AS. swincan, akin to swingan. See
   Swing.]
   To labor; to toil; to salve. [Obs. or Archaic]
   [1913 Webster]

         Or swink with his hands and labor.       --Chaucer.
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         For which men swink and sweat incessantly. --Spenser.
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         The swinking crowd at every stroke pant "Ho." --Sir
                                                  Samuel
                                                  Freguson.
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The Collaborative International Dictionary of English v.0.48:

Swink \Swink\, v. t.
   1. To cause to toil or drudge; to tire or exhaust with labor.
      [Obs.]
      [1913 Webster]

            And the swinked hedger at his supper sat. --Milton.
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   2. To acquire by labor. [Obs.] --Piers Plowman.
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            To devour all that others swink.      --Chaucer.
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The Collaborative International Dictionary of English v.0.48:

Swink \Swink\, n. [As. swinc, geswinc.]
   Labor; toil; drudgery. [Obs.] --Chaucer. Spenser.
   [1913 Webster]

U.S. Gazetteer Places (2000):

Swink, CO -- U.S. town in Colorado
   Population (2000):    696
   Housing Units (2000): 291
   Land area (2000):     0.269292 sq. miles (0.697463 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.269292 sq. miles (0.697463 sq. km)
   FIPS code:            75970
   Located within:       Colorado (CO), FIPS 08
   Location:             38.014739 N, 103.627802 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Swink, CO
    Swink


U.S. Gazetteer Places (2000):

Swink, OK -- U.S. town in Oklahoma
   Population (2000):    83
   Housing Units (2000): 47
   Land area (2000):     0.161756 sq. miles (0.418946 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.161756 sq. miles (0.418946 sq. km)
   FIPS code:            71950
   Located within:       Oklahoma (OK), FIPS 40
   Location:             34.018441 N, 95.202851 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Swink, OK
    Swink