noun

• (informal) A group or list of related items up for consideration, especially in some kind of selection process.
  "When we were looking for a new housemate, we put the nice woman on the "maybe" pile, and the annoying guy on the "no" pile"
• (slang) A large amount of money.
  "He made a pile from that invention of his."
• (architecture, civil engineering) A beam, pole, or pillar, driven completely into the ground, usually as one of a group that constitutes a foundation.
• (obsolete) The reverse (or tails) of a coin.

verb

• (transitive, often used with the preposition "up") To lay or throw into a pile or heap; to heap up; to collect into a mass; to accumulate
  "They were piling up wood on the wheelbarrow."
• (transitive) To cover with heaps; or in great abundance; to fill or overfill; to load.
  "We piled the camel with our loads."
• (transitive) To add something to a great number.
  "But as the second half wore on, Sunderland piled forward at every opportunity and their relentless pressure looked certain to be rewarded in the closing stages."
• (transitive) (of vehicles) To create a hold-up.

noun

• (obsolete) A dart; an arrow.
• (heraldry) One of the ordinaries or subordinaries having the form of a wedge, usually placed palewise, with the broadest end uppermost.

verb

• (transitive) To drive piles into; to fill with piles; to strengthen with piles.