The Collaborative International Dictionary of English v.0.48:

Mark \Mark\ (m[aum]rk), v. t. [imp. & p. p. Marked
   (m[aum]rkt); p. pr. & vb. n. Marking.] [OE. marken, merken,
   AS. mearcian, from mearc. See Mark the sign.]
   1. To put a mark upon; to affix a significant mark to; to
      make recognizable by a mark; as, to mark a box or bale of
      merchandise; to mark clothing.
      [1913 Webster]

   2. To be a mark upon; to designate; to indicate; -- used
      literally and figuratively; as, this monument marks the
      spot where Wolfe died; his courage and energy marked him
      for a leader.
      [1913 Webster]

   3. To leave a trace, scratch, scar, or other mark, upon, or
      any evidence of action; as, a pencil marks paper; his
      hobnails marked the floor.
      [1913 Webster]

   4. To keep account of; to enumerate and register; as, to mark
      the points in a game of billiards or cards.
      [1913 Webster]

   5. To notice or observe; to give attention to; to take note
      of; to remark; to heed; to regard; as, mark my words.
      "Mark the perfect man." --Ps. xxxvii. 37.
      [1913 Webster]

   To mark out.
      (a) To designate, as by a mark; to select; as, the
          ringleaders were marked out for punishment.
      (b) To obliterate or cancel with a mark; as, to mark out
          an item in an account.

   To mark time (Mil.), to keep the time of a marching step by
      moving the legs alternately without advancing.
      [1913 Webster]

   Syn: To note; remark; notice; observe; regard; heed; show;
        evince; indicate; point out; betoken; denote;
        characterize; stamp; imprint; impress; brand.
        [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Marking \Mark"ing\, n.
   The act of one who, or that which, marks; the mark or marks
   made; arrangement or disposition of marks or coloring; as,
   the marking of a bird's plumage.
   [1913 Webster]

   Marking ink, indelible ink, because used in marking linen.


   Marking nut (Bot.), the nut of the Semecarpus Anacardium,
      an East Indian tree. The shell of the nut yields a
      blackish resinous juice used for marking cotton cloth, and
      an oil prepared from it is used for rheumatism.
      [1913 Webster]

WordNet (r) 3.0 (2006):

marking
    n 1: a distinguishing symbol; "the owner's mark was on all the
         sheep" [syn: marker, marking, mark]
    2: a pattern of marks
    3: evaluation of performance by assigning a grade or score;
       "what he disliked about teaching was all the grading he had
       to do" [syn: marking, grading, scoring]
    4: the act of making a visible mark on a surface

Moby Thesaurus II by Grady Ward, 1.0:

175 Moby Thesaurus words for "marking":
   armory, aroma, attribute, badge, badge of office, badges, baton,
   birthmark, blaze, blazonry, blemish, blotch, brand, brassard, burr,
   button, cachet, cap and gown, cast, caste mark, chain,
   chain of office, character, characteristic, check, checkmark,
   chiseling, cicatrix, class ring, cockade, collar, configuration,
   cross, cross-hatching, cut, dapple, decoration, demitint,
   differentia, differential, discoloration, distinctive feature, dot,
   dress, eagle, earmark, emblems, engravement, engraving, ensigns,
   etch, etching, fasces, feature, figure, figurehead, flavor, fleck,
   fleur-de-lis, flick, freckle, gash, gem-engraving, glass-cutting,
   glyptic, graving, gust, hack, half tint, hallmark,
   hammer and sickle, hatching, heraldry, idiocrasy, idiosyncrasy,
   impress, impression, incision, index, individualism, inscript,
   inscription, insignia, jot, keynote, lapel pin, lentigo, line,
   lineaments, lining, livery, mace, macula, mannerism, mantle, mark,
   markings, medal, mold, mole, mortarboard, mottle, nature, nevus,
   nick, notch, odor, old school tie, particularity, patch,
   peculiarity, pin, point, polka dot, prick, property, puncture,
   quality, quirk, regalia, ring, rose, savor, scar, scarification,
   school ring, score, scoring, scotch, scratch, scratching, seal,
   shamrock, shape, sigillography, singularity, skull and crossbones,
   slash, slashing, smack, specialty, speck, speckle, sphragistics,
   splash, splotch, spot, staff, stain, stamp, stigma, stipple,
   stippling, strawberry mark, swastika, taint, tang, tartan, taste,
   tattoo, tattoo mark, thistle, tick, tie, tint, tittle, token,
   tooling, trait, trick, type-cutting, uniform, verge, wand,
   watermark