ballast

Noun

• an electrical device for starting and regulating fluorescent and discharge lamps

• a resistor inserted into a circuit to compensate for changes (as those arising from temperature fluctuations)

• an attribute that tends to give stability in character and morals; something that steadies the mind or feelings

• coarse gravel laid to form a bed for streets and railroads

• any heavy material used to stabilize a ship or airship

Verb

• make steady with a ballast

Related words

• Synonyms: 
  light ballast , ballast resistor , barretter