Definitions of ballast:
- noun: any heavy material used to stabilize a ship or airship
- noun: an electrical device for starting and regulating fluorescent and discharge lamps
- noun: an attribute that tends to give stability in character and morals; something that steadies the mind or feelings
- noun: coarse gravel laid to form a bed for streets and railroads
- noun: a resistor inserted into a circuit to compensate for changes (as those arising from temperature fluctuations)
- verb: make steady with a ballast
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