The Collaborative International Dictionary of English v.0.48:

Swim \Swim\, v. i. [imp. Swamor Swum; p. p. Swum; p. pr. &
   vb. n. Swimming.] [AS. swimman; akin to D. zwemmen, OHG.
   swimman, G. schwimmen, Icel. svimma, Dan. sw["o]mme, Sw.
   simma. Cf. Sound an air bladder, a strait.]
   1. To be supported by water or other fluid; not to sink; to
      float; as, any substance will swim, whose specific gravity
      is less than that of the fluid in which it is immersed.
      [1913 Webster]

   2. To move progressively in water by means of strokes with
      the hands and feet, or the fins or the tail.
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            Leap in with me into this angry flood,
            And swim to yonder point.             --Shak.
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   3. To be overflowed or drenched. --Ps. vi. 6.
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            Sudden the ditches swell, the meadows swim.
                                                  --Thomson.
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   4. Fig.: To be as if borne or floating in a fluid.
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            [They] now swim in joy.               --Milton.
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   5. To be filled with swimming animals. [Obs.]
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            [Streams] that swim full of small fishes. --Chaucer.
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The Collaborative International Dictionary of English v.0.48:

Swim \Swim\, v. i. [OE. swime dizziness, vertigo, AS.
   sw[imac]ma; akin to D. zwijm, Icel. svimi dizziness, svina to
   subside, sv[imac]a to abate, G. schwindel dizziness,
   schwinden to disappear, to dwindle, OHG. sw[imac]nan to
   dwindle. Cf. Squemish, Swindler.]
   To be dizzy; to have an unsteady or reeling sensation; as,
   the head swims.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Swim \Swim\, v. t.
   1. To pass or move over or on by swimming; as, to swim a
      stream.
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            Sometimes he thought to swim the stormy main.
                                                  --Dryden.
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   2. To cause or compel to swim; to make to float; as, to swim
      a horse across a river.
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   3. To immerse in water that the lighter parts may float; as,
      to swim wheat in order to select seed.
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The Collaborative International Dictionary of English v.0.48:

Swim \Swim\, n.
   1. The act of swimming; a gliding motion, like that of one
      swimming. --B. Jonson.
      [1913 Webster]

   2. The sound, or air bladder, of a fish.
      [1913 Webster]

   3. A part of a stream much frequented by fish. [Eng.]
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   Swim bladder, an air bladder of a fish.

   To be in the swim, to be in a favored position; to be
      associated with others in active affairs. [Colloq.]
      [1913 Webster]

WordNet (r) 3.0 (2006):

swim
    n 1: the act of swimming; "it was the swimming they enjoyed
         most": "they took a short swim in the pool" [syn:
         swimming, swim]
    v 1: travel through water; "We had to swim for 20 minutes to
         reach the shore"; "a big fish was swimming in the tank"
    2: be afloat either on or below a liquid surface and not sink to
       the bottom [syn: float, swim] [ant: go down, go
       under, settle, sink]
    3: be dizzy or giddy; "my brain is swimming after the bottle of
       champagne"
    4: be covered with or submerged in a liquid; "the meat was
       swimming in a fatty gravy" [syn: swim, drown]
    5: move as if gliding through water; "this snake swims through
       the soil where it lives"

Moby Thesaurus II by Grady Ward, 1.0:

48 Moby Thesaurus words for "swim":
   Australian crawl, aquaplaning, aquatics, backstroke, balneation,
   bathe, bathing, bon ton, breaststroke, butterfly, convention,
   crawl, custom, dive, diving, dog paddle, fashion, fin, fishtail,
   flapper, flipper, float, floating, go in swimming, go in wading,
   haute couture, high fashion, mode, natation, prevailing taste,
   proper thing, reel, sidestroke, skinny-dip, stream of fashion,
   style, surfboarding, surfing, swimming, tread water,
   treading water, trend, turn, vogue, wade, wading, waterskiing,
   whirl



V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

SWIM
       Someone Who Isn't Me (slang, Usenet, IRC)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

SWIM
       Super Woz' Integrated Machine