The Collaborative International Dictionary of English v.0.48:

Apple \Ap"ple\ ([a^]p"p'l), n. [OE. appel, eppel, AS. [ae]ppel,
   [ae]pl; akin to Fries. & D. appel, OHG, aphul, aphol, G.
   apfel, Icel. epli, Sw. [aum]ple, Dan. [ae]ble, Gael. ubhall,
   W. afal, Arm. aval, Lith. ob[*u]lys, Russ. iabloko; of
   unknown origin.]
   1. The fleshy pome or fruit of a rosaceous tree (Pyrus
      malus) cultivated in numberless varieties in the
      temperate zones.
      [1913 Webster]

   Note: The European crab apple is supposed to be the original
         kind, from which all others have sprung.
         [1913 Webster]

   2. (bot.) Any tree genus Pyrus which has the stalk sunken
      into the base of the fruit; an apple tree.
      [1913 Webster]

   3. Any fruit or other vegetable production resembling, or
      supposed to resemble, the apple; as, apple of love, or
      love apple (a tomato), balsam apple, egg apple, oak apple.
      [1913 Webster]

   4. Anything round like an apple; as, an apple of gold.
      [1913 Webster]

   Note: Apple is used either adjectively or in combination; as,
         apple paper or apple-paper, apple-shaped, apple
         blossom, apple dumpling, apple pudding.
         [1913 Webster]

   Apple blight, an aphid which injures apple trees. See
      Blight, n.

   Apple borer (Zool.), a coleopterous insect (Saperda
      candida or Saperda bivittata), the larva of which bores
      into the trunk of the apple tree and pear tree.

   Apple brandy, brandy made from apples.

   Apple butter, a sauce made of apples stewed down in cider.
      --Bartlett.

   Apple corer, an instrument for removing the cores from
      apples.

   Apple fly (Zool.), any dipterous insect, the larva of which
      burrows in apples. Apple flies belong to the genera
      Drosophila and Trypeta.

   Apple midge (Zool.) a small dipterous insect (Sciara
      mali), the larva of which bores in apples.

   Apple of the eye, the pupil.

   Apple of discord, a subject of contention and envy, so
      called from the mythological golden apple, inscribed "For
      the fairest," which was thrown into an assembly of the
      gods by Eris, the goddess of discord. It was contended for
      by Juno, Minerva, and Venus, and was adjudged to the
      latter.

   Apple of love, or Love apple, the tomato (Lycopersicum
      esculentum).

   Apple of Peru, a large coarse herb (Nicandra physaloides)
      bearing pale blue flowers, and a bladderlike fruit
      inclosing a dry berry.

   Apples of Sodom, a fruit described by ancient writers as
      externally of fair appearance but dissolving into smoke
      and ashes when plucked; Dead Sea apples. The name is often
      given to the fruit of Solanum Sodom[ae]um, a prickly
      shrub with fruit not unlike a small yellow tomato.

   Apple sauce, stewed apples. [U. S.]

   Apple snail or Apple shell (Zool.), a fresh-water,
      operculated, spiral shell of the genus Ampullaria.

   Apple tart, a tart containing apples.

   Apple tree, a tree which naturally bears apples. See
      Apple, 2.

   Apple wine, cider.

   Apple worm (Zool.), the larva of a small moth (Carpocapsa
      pomonella) which burrows in the interior of apples. See
      Codling moth.

   Dead Sea Apple.
      (a) pl. Apples of Sodom. Also Fig. "To seek the Dead Sea
          apples of politics." --S. B. Griffin.
      (b) A kind of gallnut coming from Arabia. See Gallnut.
          [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Apple \Ap"ple\ ([a^]p"p'l), v. i.
   To grow like an apple; to bear apples. --Holland.
   [1913 Webster]

WordNet (r) 3.0 (2006):

apple
    n 1: fruit with red or yellow or green skin and sweet to tart
         crisp whitish flesh
    2: native Eurasian tree widely cultivated in many varieties for
       its firm rounded edible fruits [syn: apple, orchard apple
       tree, Malus pumila]

The Free On-line Dictionary of Computing (30 December 2018):

APPLE

    A revision of APL for the Illiac IV.

   (1995-04-28)


The Free On-line Dictionary of Computing (30 December 2018):

Apple Computer, Inc.
Apple

    Manufacturers of the Macintosh range of personal
   computers as well as the earlier Apple I, Apple II and
   Lisa.  Founded on 1 April 1976 by Steve Jobs and Steve
   Wozniak.

   Apples were among the first microcomputers.  They originally
   used the 6502 processor and are still being made (August
   1994), now using the 65816.  The Apple II line, which
   includes the Apple I, is the longest existing line of
   microcomputers.

   Steve Jobs left Apple (involuntarily) and started NeXT and
   later returned when Apple bought NeXT in late 1997(?).

   Quarterly sales $2150M, profits $138M (Aug 1994).
   (http://apple.com/).

   [Dates?  More?]

   (1998-03-13)


Easton's 1897 Bible Dictionary:

Apple
   (Heb. tappuah, meaning "fragrance"). Probably the apricot or
   quince is intended by the word, as Palestine was too hot for the
   growth of apples proper. It is enumerated among the most
   valuable trees of Palestine (Joel 1:12), and frequently referred
   to in Canticles, and noted for its beauty (2:3, 5; 8:5). There
   is nothing to show that it was the "tree of the knowledge of
   good and evil." Dr. Tristram has suggested that the apricot has
   better claims than any other fruit-tree to be the apple of
   Scripture. It grows to a height of 30 feet, has a roundish mass
   of glossy leaves, and bears an orange coloured fruit that gives
   out a delicious perfume. The "apple of the eye" is the Heb.
   _ishon_, meaning manikin, i.e., the pupil of the eye (Prov.
   7:2). (Comp. the promise, Zech. 2:8; the prayer, Ps. 17:8; and
   its fulfilment, Deut. 32:10.)

     The so-called "apple of Sodom" some have supposed to be the
   Solanum sanctum (Heb. hedek), rendered "brier" (q.v.) in Micah
   7:4, a thorny plant bearing fruit like the potato-apple. This
   shrub abounds in the Jordan valley. (See ENGEDI.)