Coarse gravel or similar material laid to form a bed for roads or railroads, or in making concrete; track ballast.
Anything that steadies emotion or the mind.
Heavy material that is placed in the hold of a ship (or in the gondola of a balloon), to provide stability.
A material, such as aggregate or precast concrete pavers, which employs its mass and the force of gravity to hold single-ply roof membranes in place.
That which gives, or helps to maintain, uprightness, steadiness, and security.
device used for stabilizing current in an electric circuit (e.g. in a tube lamp supply circuit)
To stabilize or load a ship with ballast.
To lay ballast on the bed of a railroad track.
To weigh down with a ballast.
The layer of gravel or other foundation on which a railway track is laid.
The land on which a railway (especially one that has been closed or dismantled) was built; the roadbed for a railroad.