PILED
\pˈa͡ɪld], \pˈaɪld], \p_ˈaɪ_l_d]\
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Voltaic or galvanic pile, a series of plates of copper and zinc laid one above the other alternately, with cloth or paper placed between each pair, moistened with an acid solution, for producing a current of electricity.
By Stormonth, James, Phelp, P. H.