The Collaborative International Dictionary of English v.0.48:

Aglow \A*glow"\, adv. & a. [Pref. a- + glow.]
   In a glow; glowing; as, cheeks aglow; the landscape all
   aglow.
   [1913 Webster]

WordNet (r) 3.0 (2006):

aglow
    adj 1: softly bright or radiant; "a house aglow with lights";
           "glowing embers"; "lambent tongues of flame"; "the lucent
           moon"; "a sky luminous with stars" [syn: aglow(p),
           lambent, lucent, luminous]

Moby Thesaurus II by Grady Ward, 1.0:

97 Moby Thesaurus words for "aglow":
   ablaze, afire, aflame, aflicker, alight, ardent, bathed with light,
   beaming, beamy, bespangled, blazing, blushing, bright and sunny,
   brightened, burning, candent, candescent, candlelit, comburent,
   conflagrant, enlightened, firelit, flagrant, flaming, flaring,
   flickering, flushing, fuming, gaslit, gleaming, gleamy, glinting,
   glowing, guttering, ignescent, ignited, illuminant, illuminated,
   in a blaze, in a glow, in flames, incandescent, inflamed,
   irradiate, irradiated, irradiative, kindled, lamping, lamplit,
   lanternlit, light as day, lighted, lightened, lit, lit up, live,
   living, lucent, luciferous, lucific, luciform, luminant,
   luminative, luminiferous, luminificent, luminous, lustrous,
   moonlit, on fire, orient, radiant, reeking, rutilant, rutilous,
   scintillant, scintillating, shining, shiny, smoking, smoldering,
   spangled, sparking, star-spangled, star-studded, starbright,
   starlike, starlit, starry, streaming, studded, suffused, sunlit,
   sunny, sunshiny, tinseled, unextinguished, unquenched