[1] : The Collaborative International Dictionary of English v.0.48

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.
      1913 webster

   2. to fill in, as the bed of a railroad, with gravel, stone,
      etc., in order to make it firm and solid.
      1913 webster

   3. to keep steady; to steady, morally.
      1913 webster

            't is charity must ballast the heart. --hammond.
      1913 webster
see also:
ballasted ballasting 

Ballasted >> B Words
Ballasted, definition of term: Ballasted
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