Definition of BALLAST

ballast

Plural: ballasts

Noun

  • any heavy material used to stabilize a ship or airship
  • coarse gravel laid to form a bed for streets and railroads
  • an attribute that tends to give stability in character and morals; something that steadies the mind or feelings
  • a resistor inserted into a circuit to compensate for changes (as those arising from temperature fluctuations)
  • an electrical device for starting and regulating fluorescent and discharge lamps
  • Heavy material that is placed in the hold of a ship (or in the gondola of a balloon), to provide stability.
  • Anything that steadies emotion or the mind.
  • Coarse gravel or similar material laid to form a bed for roads or railroads, or in making concrete; track ballast.
  • A material, such as aggregate or precast concrete pavers, which employs its mass and the force of gravity to hold single-ply roof membranes in place.
  • device used for stabilizing current in an electric circuit (e.g. in a tube lamp supply circuit)
  • That which gives, or helps to maintain, uprightness, steadiness, and security.

Verb

Verb Forms: ballasted, ballasting, ballasts

  • To give stability by adding weight.
  • make steady with a ballast
  • To stabilize or load a ship with ballast.
  • To lay ballast on the bed of a railroad track.
  • To weigh down with a ballast.

Examples

  • He used a few low-scoring words to ballast his score.

Origin / Etymology

From Middle English bar (“bare”) + last (“load”).

Synonyms

ballast resistor, barretter, light ballast

Scrabble Score: 9

ballast: valid Scrabble (US) TWL Word
ballast: valid Scrabble Word in Merriam-Webster MW Dictionary
ballast: valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 12

ballast: valid Words With Friends Word