The Collaborative International Dictionary of English v.0.48:

Blazon \Bla"zon\, n. [OE. blason, blasoun, shield, fr. F. blason
   coat of arms, OF. shield, from the root of AS. bl[ae]se
   blaze, i. e., luster, splendor, MHG. blas torch See Blaze,
   n.]
   1. A shield. [Obs.]
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   2. An heraldic shield; a coat of arms, or a bearing on a coat
      of arms; armorial bearings.
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            Their blazon o'er his towers displayed. --Sir W.
                                                  Scott.
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   3. The art or act of describing or depicting heraldic
      bearings in the proper language or manner. --Peacham.
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   4. Ostentatious display, either by words or other means;
      publication; show; description; record.
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            Obtrude the blazon of their exploits upon the
            company.                              --Collier.
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            Thy tongue, thy face, thy limbs, actions, and
            spirit,
            Do give thee fivefold blazon.         --Shak.
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The Collaborative International Dictionary of English v.0.48:

Blazon \Bla"zon\, v. t. [imp. & p. p. Blazoned; p. pr. & vb.
   n. Blazoning.] [From blazon, n.; confused with 4th blaze:
   cf. F. blasonner.]
   1. To depict in colors; to display; to exhibit conspicuously;
      to publish or make public far and wide.
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            Thyself thou blazon'st.               --Shak.
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            There pride sits blazoned on th' unmeaning brow.
                                                  --Trumbull.
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            To blazon his own worthless name.     --Cowper.
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   2. To deck; to embellish; to adorn.
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            She blazons in dread smiles her hideous form.
                                                  --Garth.
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   3. (Her.) To describe in proper terms (the figures of
      heraldic devices); also, to delineate (armorial bearings);
      to emblazon.
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            The coat of, arms, which I am not herald enough to
            blazon into English.                  --Addison.
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The Collaborative International Dictionary of English v.0.48:

Blazon \Bla"zon\, v. i.
   To shine; to be conspicuous. [R.]
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WordNet (r) 3.0 (2006):

blazon
    n 1: the official symbols of a family, state, etc. [syn: coat
         of arms, arms, blazon, blazonry]
    v 1: decorate with heraldic arms [syn: emblazon, blazon]

Moby Thesaurus II by Grady Ward, 1.0:

218 Moby Thesaurus words for "blazon":
   achievement, adorn, advertise, air, alerion, animal charge,
   announce, annulet, annunciate, argent, armorial bearings, armory,
   arms, array, azure, bandeau, bar, bar sinister, baton, bearings,
   beautify, bedeck, bedizen, bend, bend sinister, billet, blare,
   blare forth, blaze, blaze abroad, blazon about, blazon forth,
   blazonry, bordure, brandish, bravura, brilliancy, broad arrow,
   broadcast, bruit about, cadency mark, canton, celebrate, chaplet,
   charge, chevron, chief, coat of arms, cockatrice, color, coronet,
   crescent, crest, cross, cross moline, crown, cry, cry out, dandify,
   dangle, daring, dash, deck, deck out, declaim, decorate,
   demonstrate, demonstration, device, difference, differencing,
   display, dizen, doll up, dramatics, dress, dress up, eagle, eclat,
   embellish, emblazon, embroider, enrich, ermine, ermines, erminites,
   erminois, escutcheon, etalage, exhibit, exhibition, exhibitionism,
   falcon, false front, fanfaronade, fess, fess point, field, fig out,
   figure, file, fix up, flair, flanch, flash, flaunt, flaunting,
   fleur-de-lis, flourish, fret, fur, furbish, fusil, garland,
   garnish, grace, griffin, gules, gussy up, gyron, hatchment, helmet,
   herald, herald abroad, heraldic device, histrionics, hold up,
   honor point, impalement, impaling, inescutcheon, label, lion,
   lozenge, manifest, manifestation, mantling, marshaling, martlet,
   mascle, metal, motto, mullet, nombril point, octofoil, or,
   ordinary, orle, ornament, pageant, pageantry, paint, pale, paly,
   parade, pean, pheon, prank, prank up, preen, prettify, primp,
   primp up, prink, prink up, proclaim, promulgate, publish, purpure,
   put forth, put forward, quarter, quartering, redecorate, redo,
   refurbish, rose, sable, saltire, scutcheon, set off, set out, sham,
   shield, shout, show, showing-off, smarten, smarten up, sound,
   spectacle, splash, splurge, sport, spread eagle, spruce up,
   staginess, subordinary, tenne, theatrics, thunder, thunder forth,
   tincture, titivate, torse, tressure, trick out, trick up, trim,
   trumpet, trumpet forth, unicorn, vair, vaunt, vert, wave, wreath,
   yale