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ballast Definition

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ballast
noun(bal-last)
a heavy substance (such as rocks or water) placed in such a way as to improve stability and control (as of the draft of a ship or the buoyancy of a balloon or submarine)
ballast
noun(bal-last)
something that gives stability (as in character or conduct)
ballast
noun(bal-last)
gravel or broken stone laid in a railroad bed or used in making concrete
ballast
verb(bal-last)
to steady or equip with or as if with ballast
ballast
verb(bal-last)
to fill in (something, such as a railroad bed) with ballast

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