The Collaborative International Dictionary of English v.0.48:

Swash \Swash\, n. [Cf. Swash, v. i., Squash, v. t.] (Arch.)
   An oval figure, whose moldings are oblique to the axis of the
   work. --Moxon.
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   Swash plate (Mach.), a revolving circular plate, set
      obliquely on its shaft, and acting as a cam to give a
      reciprocating motion to a rod in a direction parallel to
      the shaft.
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The Collaborative International Dictionary of English v.0.48:

Swash \Swash\, a. [Cf. Swash, v. i., Squash, v. t.]
   Soft, like fruit too ripe; swashy. [Prov. Eng.] --Pegge.
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The Collaborative International Dictionary of English v.0.48:

Swash \Swash\, v. i. [imp. & p. p. Swashed; p. pr. & vb. n.
   Swashing.] [Probably of imitative origin; cf. Sw. svasska
   to splash, and, for sense 3, Sw. svassa to bully, to
   rodomontade.]
   1. To dash or flow noisily, as water; to splash; as, water
      swashing on a shallow place.
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   2. To fall violently or noisily. [Obs.] --Holinshed.
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   3. To bluster; to make a great noise; to vapor or brag.
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The Collaborative International Dictionary of English v.0.48:

Swash \Swash\, n.
   1. Impulse of water flowing with violence; a dashing or
      splashing of water.
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   2. A narrow sound or channel of water lying within a sand
      bank, or between a sand bank and the shore, or a bar over
      which the sea washes.
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   3. Liquid filth; wash; hog mash. [Obs.]
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   4. A blustering noise; a swaggering behavior. [Obs.]
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   5. A swaggering fellow; a swasher.
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WordNet (r) 3.0 (2006):

swash
    n 1: the movement or sound of water; "the swash of waves on the
         beach"
    v 1: make violent, noisy movements
    2: dash a liquid upon or against; "The mother splashed the
       baby's face with water" [syn: spatter, splatter, plash,
       splash, splosh, swash]
    3: show off [syn: boast, tout, swash, shoot a line,
       brag, gas, blow, bluster, vaunt, gasconade]
    4: act in an arrogant, overly self-assured, or conceited manner
       [syn: swagger, bluster, swash]