ballast Definition
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ballast
noun
- 1. Heavy material used to keep a ship steady when it is carrying little or no cargo, or to weigh down and stabilize a hot-air balloon.
2. Broken rocks or stones used as a base for roads and railway lines.
3. Anything used to give a steadying influence, or lend weight or stability.
- Thesaurus: weight, counterbalance, counterweight.
