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ballast

C2
Fairly common

Pronunciation

UK

  • /bˈæləst/

US

  • /ˈbæləst/

Meanings

Noun

  1. heavy material used to steady a ship, rail track, or other structure

  2. something that gives stability or steadiness

  3. a device that regulates current in a fluorescent or similar lamp

Verb

  1. to load or steady with ballast

Beyond the definition

Imagine a hot air balloon: it may carry ballast—like sand or water—to make small adjustments to lift and keep the flight stable. In everyday use, ballast means added weight used to provide stability and steadiness. Ships, for example, use seawater ballast in empty holds or tanks to lower their center of gravity and prevent excess rolling or tipping. In daily life, anything that helps you stay steady during pressure can be your ballast—a supportive friend, a calm routine, or a clear plan.

Think of ballast as the invisible balance that helps prevent drift—literally in machines and vessels, and figuratively when you feel like you might lose your footing. It is not just physical weight; practical advice or a strong moral compass can act as mental ballast when facing difficult decisions.

Examples

  1. 1

    Ship stability

    Before the storm, the crew pumped water into the ballast tanks.

    • Phraseballast tanks

      spaces in a ship that hold water to keep it balanced

  2. 2

    Hot-air balloon

    The hot-air balloon had to drop some ballast to climb higher.

  3. 3

    Railway tracks

    Workers spread fresh ballast under the railway tracks after the heavy rain.

  4. 4

    Emotional support

    Her sense of humor gave the team a little ballast during a very stressful week.

    • Phrasea little ballast

      something that gives stability in a difficult situation

See also

Similar

Shades of meaning

Contrast

Used with (collocations)

  • ship ballast
  • water ballast
  • railway ballast
  • take on ballast

Word family

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Forms and spellings

4 forms open this card.

Main spelling

  • ballastnounverb

Forms

  • ballastspluralnounverb
  • ballastedpast tenseverbnoun
  • ballasting-ing formverbnoun