present participle of pile up

plural of sheet piling

present participle of pig pile

present participle of pile out

A machine for forcing a pile, a long beam, into the ground as part of the construction of a foundation; usually by raising a weight and then dropping it on the beam.

forceful

(transitive) To form a pile, stack, or heap. / (idiomatic, intransitive) To collect or accumulate, as a backlog.

A pile of crashed vehicles due to a traffic accident. / (American football) A pile of tackling players. / An accumulation that occurs over time, especially one which is not welcome.

(physics) an early nuclear reactor fuelled by uranium and moderated with graphite

(chemistry) An early electrical battery using multiple cells of zinc and graphite in dilute chromic acid