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

(vulgar, slang) Something that is not true, a mass of lies (refers to bullshit). / (vulgar, slang) Any worthless structure or device. / (vulgar, slang) A totally worthless person.

plural of pile-up

(construction) Accumulated debris from cutting brush or trimming trees.

plural of Bunsen pile

plural of pile driver