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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)
   - ballast resistor, barretter
    
5. An electrical device for starting and regulating fluorescent and discharge lamps
   - light ballast

1. Make steady with a ballast

Derived forms: ballasting, ballasts, ballasted

Type of: attribute, brace, crushed rock, electrical device, gravel, material, resistance, resistor, stabilise [Brit], stabilize, steady, stuff

Encyclopedia: Ballast, Coevorden