simple past tense and past participle of pile on

present participle of pile on

(American football) An illegal strategy wherein players tackle an opposing player.

Alternative spelling of pile on

Hair, especially when very fine or short; the fine underfur of certain animals. (Formerly countable, now treated as a collective singular.)

(transitive) To give a pile to; to make shaggy.

A mass of things heaped together; a heap. / (informal) A group or list of related items up for consideration, especially in some kind of selection process. / A mass formed in layers.

(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

(obsolete) A dart; an arrow. / The head of an arrow or spear.

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