Piling \Pil"ing\, n. [See Pile a heap.]

1. The act of heaping up.

2. (Iron Manuf.) The process of building up, heating, and working, fagots, or piles, to form bars, etc.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Piling \Pil"ing\, n. [See Pile a stake.]

A series of piles; piles considered collectively; as, the piling of a bridge.

Pug piling, sheet piles connected together at the edges by dovetailed tongues and grooves.

Sheet piling, a series of piles made of planks or half logs driven edge to edge, -- used to form the walls of cofferdams, etc.

Source: Webster's Revised Unabridged Dictionary (1913)