The Collaborative International Dictionary of English v.0.48:

Flush \Flush\, v. i. [imp. & p. p. Flushed; p. pr. & vb. n.
   Flushing.] [Cf. OE. fluschen to fly up, penetrate, F. fluz
   a flowing, E. flux, dial. Sw. flossa to blaze, and E. flash;
   perh. influenced by blush. [root]84.]
   1. To flow and spread suddenly; to rush; as, blood flushes
      into the face.
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            The flushing noise of many waters.    --Boyle.
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            It flushes violently out of the cock. --Mortimer.
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   2. To become suddenly suffused, as the cheeks; to turn red;
      to blush.
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   3. To snow red; to shine suddenly; to glow.
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            In her cheek, distemper flushing glowed. --Milton.
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   4. To start up suddenly; to take wing as a bird.
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            Flushing from one spray unto another. --W. Browne.
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WordNet (r) 3.0 (2006):

flushed
    adj 1: having the pinkish flush of health [syn: flushed,
           rose-cheeked, rosy, rosy-cheeked]
    2: (especially of the face) reddened or suffused with or as if
       with blood from emotion or exertion; "crimson with fury";
       "turned red from exertion"; "with puffy reddened eyes"; "red-
       faced and violent"; "flushed (or crimson) with embarrassment"
       [syn: crimson, red, reddened, red-faced, flushed]

Moby Thesaurus II by Grady Ward, 1.0:

181 Moby Thesaurus words for "flushed":
   ablaze, afire, ardent, baking, beaming, blistering, blithe,
   blithesome, bloated, bloated with pride, blooming, blowzed, blowzy,
   blushful, blushing, boiling, boiling over, breathless, bright,
   bright and sunny, broiling, burning, burning hot,
   burning with excitement, burnt, bursting with happiness, canicular,
   carried away, cheerful, cheery, cock-a-hoop, cordial, crowing,
   delighting, delirious, drunk, ebullient, ecstatic, elate, elated,
   embarrassed, enchanted, enraptured, enravished, enthusiastic,
   entranced, eupeptic, euphoric, exalted, excited, exhilarated,
   exuberant, exultant, exulting, febrile, fervent, fervid, fevered,
   feverish, feverous, fiery, flaming, florid, flush,
   flushed with pride, freaked out, fresh, fresh as April,
   full-blooded, genial, glad, gladsome, gloating, glowing, green,
   grilling, happy, hearty, heated, hectic, het up, high, hopeful,
   hot, hot as fire, hot as hell, hyperpyretic, hyperthermic,
   imparadised, impassioned, in a fever, in ecstasies,
   in good spirits, in heaven, in high feather, in high spirits,
   in paradise, in raptures, in rut, in seventh heaven, inflamed,
   intense, intoxicated, irrepressible, jubilant, keen, laughing,
   like a furnace, like an oven, lively, of good cheer, on cloud nine,
   on fire, optimistic, overheated, overjoyed, overjoyful, overwarm,
   parching, passionate, pink, piping hot, pleasant, possessed,
   puffed up, pyretic, radiant, rapt, raptured, rapturous, ravished,
   red, red-complexioned, red-faced, red-fleshed, red-hot, rejoicing,
   rhapsodic, riant, roasting, rosy, rosy-cheeked, rubicund, ruddy,
   ruddy-complexioned, ruddy-faced, sanguine, sanguineous, scalding,
   scorching, searing, seething, sent, sexually excited, sheepish,
   simmering, sizzling hot, smiling, smoking hot, sparkling, steaming,
   steamy, sudorific, sunburned, sunny, sweating, sweaty, sweltering,
   sweltry, swollen, toasting, torrid, transported, triumphant,
   unrestrained, vigorous, warm, white-hot, winsome, youthful,
   zealous