Source : Webster's Revised Unabridged Dictionary (1913)

Piles \Piles\, n. pl. [L. pila a ball. Cf. {Pill} a medicine.]
   (Med.)
   The small, troublesome tumors or swellings about the anus and
   lower part of the rectum which are technically called
   {hemorrhoids}. See {Hemorrhoids}.

   Note: [The singular {pile} is sometimes used.]

   {Blind piles}, hemorrhoids which do not bleed.

Source : WordNet®

pile
     n 1: a collection of objects laid on top of each other [syn: {heap},
           {mound}, {cumulus}]
     2: (often followed by `of') a large number or amount or extent;
        "a batch of letters"; "a deal of trouble"; "a lot of
        money"; "he made a mint on the stock market"; "it must
        have cost plenty" [syn: {batch}, {deal}, {flock}, {good
        deal}, {great deal}, {hatful}, {heap}, {lot}, {mass}, {mess},
         {mickle}, {mint}, {muckle}, {peck}, {plenty}, {pot}, {quite
        a little}, {raft}, {sight}, {slew}, {spate}, {stack}, {tidy
        sum}, {wad}, {whole lot}, {whole slew}]
     3: a large sum of money (especially as pay or profit); "she
        made a bundle selling real estate"; "they sank megabucks
        into their new house" [syn: {bundle}, {big bucks}, {megabucks},
         {big money}]
     4: fine soft dense hair (as the fine short hair of cattle or
        deer or the wool of sheep or the undercoat of certain
        dogs) [syn: {down}]
     5: battery consisting of voltaic cells arranged in series; the
        earliest electric battery devised by Volta [syn: {voltaic
        pile}, {galvanic pile}]
     6: a column of wood or steel or concrete that is driven into
        the ground to provide support for a structure [syn: {spile},
         {piling}, {stilt}]
     7: the yarn (as in a rug or velvet or corduroy) that stands up
        from the weave; "for uniform color and texture tailors cut
        velvet with the pile running the same direction" [syn: {nap}]
     8: a nuclear reactor that uses controlled nuclear fission to
        generate energy [syn: {atomic pile}, {atomic reactor}, {chain
        reactor}]

pile
     v 1: arrange in stacks; "heap firewood around the fireplace";
          "stack your books up on the shelves" [syn: {stack}, {heap}]
     2: press tightly together or cram; "The crowd packed the
        auditorium" [syn: {throng}, {mob}, {pack}, {jam}]
     3: place or lay as if in a pile; "The teacher piled work on the
        students until the parents protested"

Source : Free On-Line Dictionary of Computing

PILE
     
        1. Polytechnic's Instructional Language for Educators.
        Similar in use to an enhanced PILOT, but structurally more
        like Pascal with Awk-like associative arrays (optionally
        stored on disk).  Distributed to about 50 sites by Initial
        Teaching Alphabet Foundation for Apple II and CP/M.
     
        ["A Universal Computer Aided Instruction System," Henry
        G. Dietz & Ronald J Juels, Proc Natl Educ Computing Conf '83,
        pp.279-282].
     
        2.  ["PILE _ A Language for Sound Synthesis",
        P. Berg, Computer Music Journal 3.1, 1979].
     
        (1999-06-04)