A vertical series of alternate disks of two dissimilar metals (especially copper and zinc), laid up with disks of cloth or paper moistened with acid water between them, for producing a current of electricity; a voltaic pile, or galvanic pile.
A large stake, or piece of pointed timber, steel etc., driven into the earth or sea-bed for the support of a building, a pier, or other superstructure, or to form a cofferdam, etc.