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Ballast
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English Dictionary: Ballast by the DICT Development Group
3 results for Ballast
From WordNet (r) 3.0 (2006) [wn]:
ballast
n
  1. any heavy material used to stabilize a ship or airship
  2. coarse gravel laid to form a bed for streets and railroads
  3. an attribute that tends to give stability in character and morals; something that steadies the mind or feelings
  4. a resistor inserted into a circuit to compensate for changes (as those arising from temperature fluctuations)
    Synonym(s): ballast resistor, ballast, barretter
  5. an electrical device for starting and regulating fluorescent and discharge lamps
    Synonym(s): ballast, light ballast
v
  1. make steady with a ballast
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
   Ballast \Bal"last\, v. t. [imp. & p. p. {Ballasted}; p. pr. &
      vb. n. {Ballasting}.]
      1. To steady, as a vessel, by putting heavy substances in the
            hold.
  
      2. To fill in, as the bed of a railroad, with gravel, stone,
            etc., in order to make it firm and solid.
  
      3. To keep steady; to steady, morally.
  
                     'T is charity must ballast the heart. --Hammond.

From Webster's Revised Unabridged Dictionary (1913) [web1913]:
   Ballast \Bal"last\, n. [D. ballast; akin to Dan. baglast,
      ballast, OSw. barlast, Sw. ballast. The first part is perh.
      the same word as E. bare, adj.; the second is last a burden,
      and hence the meaning a bare, or mere, load. See {Bare}, a.,
      and {Last} load.]
      1. (Naut.) Any heavy substance, as stone, iron, etc., put
            into the hold to sink a vessel in the water to such a
            depth as to prevent capsizing.
  
      2. Any heavy matter put into the car of a balloon to give it
            steadiness.
  
      3. Gravel, broken stone, etc., laid in the bed of a railroad
            to make it firm and solid.
  
      4. The larger solids, as broken stone or gravel, used in
            making concrete.
  
      5. Fig.: That which gives, or helps to maintain, uprightness,
            steadiness, and security.
  
                     It [piety] is the right ballast of prosperity.
                                                                              --Barrow.
  
      {Ballast engine}, a steam engine used in excavating and for
            digging and raising stones and gravel for ballast.
  
      {Ship in ballast}, a ship carring only ballast.
No guarantee of accuracy or completeness!
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