The Collaborative International Dictionary of English v.0.48:

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.
      [1913 Webster]

            Two of far nobler shape, erect and tall. --Milton.
      [1913 Webster]

   2. Brave; bold; courageous. [Obs.]
      [1913 Webster]

            As tall a trencherman
            As e'er demolished a pye fortification. --Massinger.
      [1913 Webster]

            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.
      [1913 Webster]

   3. Fine; splendid; excellent; also, extravagant; excessive.
      [Obs. or Slang] --B. Jonson.
      [1913 Webster]

   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.
          [1913 Webster] Tallage

WordNet (r) 3.0 (2006):

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

The Free On-line Dictionary of Computing (19 January 2023):

TALL

    TAC List Language.

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

   (1995-03-01)