Ballast a. : Any heavy substance, as stone, iron, etc., put into the hold to sink a vessel in the water to such a depth as to prevent capsizing.

Ballast a. : Any heavy matter put into the car of a balloon to give it steadiness.

Ballast a. : Gravel, broken stone, etc., laid in the bed of a railroad to make it firm and solid.

Ballast a. : The larger solids, as broken stone or gravel, used in making concrete.

Ballast a. : Fig.: That which gives, or helps to maintain, uprightness, steadiness, and security.

Ballast v. t. : To steady, as a vessel, by putting heavy substances in the hold.

Ballast v. t. : To fill in, as the bed of a railroad, with gravel, stone, etc., in order to make it firm and solid.

Ballast v. t. : To keep steady; to steady, morally.

Example:
How difficult is it to replace an electronic Ballast in a kitchen light fixture?

Taxonomy
Ballast, Lance Hammer, Award Winner, Sundance Film Festival, Cinematography Award, email updates, cinematography awards.

Defination from the web:
Ballast, a film by Lance Hammer, winner of the directing and cinematography awards in the 2008 Sundance Film Festival dramatic competition. ... If you would like to receive email updates about Ballast, enter your email address here: ...