Definition:-

• Heavy material, such as gravel, sand, iron, or lead, placed low in a vessel to improve its stability. (noun)
• Gravel or coarse stone used to form the bed of a railroad track or road. (noun)
• A passive component used in an electric circuit to moderate changes in current. (noun)
• Give stability to (a ship) by putting a heavy substance in its bilge. (transitive verb)
• Form (the bed of a railroad line or road) with gravel or coarse stone. (transitive verb)