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  1. Dictionary
    ballast
    /ˈbaləst/

    noun

    • 1. heavy material, such as gravel, sand, or iron, placed in the bilge of a ship to ensure its stability: "the hull had insufficient ballast"
    • 2. gravel or coarse stone used to form the bed of a railway track or the substratum of a road: "a thick layer of railway ballast"

    verb

    • 1. give stability to (a ship) by putting a heavy substance in its bilge: "the vessel has been ballasted to give the necessary floating stability"
    • 2. form (the bed of a railway line or the substratum of a road) with gravel or coarse stone: "the track was laid with rails and ballasted with earth"

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  2. dictionary.cambridge.org › dictionary › englishBALLAST | English meaning - Cambridge Dictionary

    Ballast is heavy matter used to make a ship or a hot-air balloon heavier, or something that helps someone or something to succeed. Learn more about the meaning, pronunciation, and usage of ballast with examples and translations.

    • Ballast Tank

      Examples of how to use “ballast tank” in a sentence from...

    • Ballcock

      BALLCOCK definition: 1. a device in a water tank that...

    • Simplified

      BALLAST translate: （船的）压舱物;（气球的）镇重物;（用作路基的）道砟，石碴. Learn more...

    • Deutsch

      ballast Bedeutung, Definition ballast: 1. heavy matter such...

  3. www.merriam-webster.com › dictionary › ballastBallast Definition & Meaning - Merriam-Webster

    Learn the meaning of ballast as a noun and a verb, with examples of usage and word history. Ballast can refer to a heavy substance, a device, or a stabilizing factor.

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  5. www.dictionary.com › browse › ballastBALLAST Definition & Meaning | Dictionary.com

    Ballast is something that provides stability or weight, especially in ships, balloons, or railroads. Learn more about the origin, synonyms, and usage of ballast in different contexts.

  6. dictionary.cambridge.org › us › dictionaryBALLAST | definition in the Cambridge English Dictionary

    Ballast is heavy matter used to make a ship or a hot-air balloon heavier, or something that helps someone or something to succeed. Learn more about the meaning, usage and pronunciation of ballast with examples and translations.

  7. www.collinsdictionary.com › dictionary › englishBALLAST definition and meaning | Collins English Dictionary

    Ballast is any substance that is used in ships or hot-air balloons to make them heavier and more stable. Ballast usually consists of water, sand, or iron.

  8. www.vocabulary.com › dictionary › ballastBallast - Definition, Meaning & Synonyms | Vocabulary.com

    A ballast is any heavy material that helps to make a ship or plane stable, including metaphorical ships like your mood. If you hate school, the thought of a weekend coming might be a ballast for your mood.

  9. www.oxfordlearnersdictionaries.com › definition › englishballast noun - Definition, pictures, pronunciation and usage...

    Ballast is heavy material placed in a ship or hot-air balloon to make it heavier and keep it steady. It can also be a layer of stones that makes a strong base on which a road, railway, etc. can be built.