Open English Wordnet

(n)ballastany heavy material used to stabilize a ship or airship

(n)ballastcoarse gravel laid to form a bed for streets and railroads

(n)ballastan attribute that tends to give stability in character and morals; something that steadies the mind or feelings

(n)ballast resistor, ballast, barrettera resistor inserted into a circuit to compensate for changes (as those arising from temperature fluctuations)

(n)ballast, light ballastan electrical device for starting and regulating fluorescent and discharge lamps

(v)ballastmake steady with a ballast

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