Source : Webster's Revised Unabridged Dictionary (1913)

Tall \Tall\, a. [Compar. {Taller}; superl. {Tallest}.] [OE. tal
   seemly, elegant, docile (?); of uncertain origin; cf. AS.
   un-tala, un-tale, bad, Goth. untals indocile, disobedient,
   uninstructed, or W. & Corn. tal high, Ir. talla meet, fit,
   proper, just.]
   1. High in stature; having a considerable, or an unusual,
      extension upward; long and comparatively slender; having
      the diameter or lateral extent small in proportion to the
      height; as, a tall person, tree, or mast.

            Two of far nobler shape, erect and tall. --Milton.

   2. Brave; bold; courageous. [Obs.]

            As tall a trencherman As e'er demolished a pye
            fortification.                        --Massinger.

            His companions, being almost in despair of victory,
            were suddenly recomforted by Sir William Stanley,
            which came to succors with three thousand tall men.
                                                  --Grafton.

   3. Fine; splendid; excellent; also, extravagant; excessive.
      [Obs. or Slang] --B. Jonson.

   Syn: High; lofty.

   Usage: {Tall}, {High}, {Lofty}. High is the generic term, and
          is applied to anything which is elevated or raised
          above another thing. Tall specifically describes that
          which has a small diameter in proportion to its
          height; hence, we speak of a tall man, a tall steeple,
          a tall mast, etc., but not of a tall hill. Lofty has a
          special reference to the expanse above us, and denotes
          an imposing height; as, a lofty mountain; a lofty
          room. Tall is now properly applied only to physical
          objects; high and lofty have a moral acceptation; as,
          high thought, purpose, etc.; lofty aspirations; a
          lofty genius. Lofty is the stronger word, and is
          usually coupled with the grand or admirable.

Source : WordNet®

tall
     adj 1: great in vertical dimension; high in stature; "tall people";
            "tall buildings"; "tall trees"; "tall ships" [ant: {short}]
     2: lofty in style; "he engages in so much tall talk, one never
        really realizes what he is saying" [syn: {grandiloquent},
        {magniloquent}]
     3: impressively difficult; "a tall order" [syn: {tall(a)}]
     4: too improbable to admit of belief; "a tall story" [syn: {improbable},
         {marvelous}, {marvellous}, {tall(a)}]

Source : Free On-Line Dictionary of Computing

TALL
     
         TAC List Language.
     
        ["TALL - A List Processor for the Philco 2000", J. Feldman,
        CACM 5(9):484-485 (Sep 1962)].
     
        (1995-03-01)