The Collaborative International Dictionary of English v.0.48:

Ruddy \Rud"dy\, v. t.
   To make ruddy. [R.] --Sir W. Scott.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Ruddy \Rud"dy\, a. [Compar. Ruddier; superl. Ruddiest.] [AS.
   rudig. See Rud, n.]
   1. Of a red color; red, or reddish; as, a ruddy sky; a ruddy
      flame. --Milton.
      [1913 Webster]

            They were more ruddy in body than rubies. --Lam. iv.
                                                  7.
      [1913 Webster]

   2. Of a lively flesh color, or the color of the human skin in
      high health; as, ruddy cheeks or lips. --Dryden.
      [1913 Webster]

   Ruddy duck (Zool.), an American duck (Erismatura rubida)
      having a broad bill and a wedge-shaped tail composed of
      stiff, sharp feathers. The adult male is rich brownish red
      on the back, sides, and neck, black on the top of the
      head, nape, wings, and tail, and white on the cheeks. The
      female and young male are dull brown mixed with blackish
      on the back; grayish below. Called also dunbird,
      dundiver, ruddy diver, stifftail, spinetail,
      hardhead, sleepy duck, fool duck, spoonbill, etc.


   Ruddy plover (Zool.) the sanderling.
      [1913 Webster]

WordNet (r) 3.0 (2006):

ruddy
    adj 1: inclined to a healthy reddish color often associated with
           outdoor life; "a ruddy complexion"; "Santa's rubicund
           cheeks"; "a fresh and sanguine complexion" [syn:
           rubicund, ruddy, florid, sanguine]
    2: of a color at the end of the color spectrum (next to orange);
       resembling the color of blood or cherries or tomatoes or
       rubies [syn: red, reddish, ruddy, blood-red,
       carmine, cerise, cherry, cherry-red, crimson,
       ruby, ruby-red, scarlet]

Moby Thesaurus II by Grady Ward, 1.0:

123 Moby Thesaurus words for "ruddy":
   Titian, Titian-red, absolute, blamed, blankety-blank, blasted,
   bleeding, blessed, blinking, bloody, blooming, blowsy, blowzed,
   blowzy, blushful, blushing, bricky, burnt, cardinal, carmine,
   carnation, carnelian, cerise, cherry, cherry-colored, cherry-red,
   complete, confounded, crimson, dadburned, damask, damnable, danged,
   darned, dashed, deuced, doggone, doggoned, embarrassed, execrable,
   ferruginous, fiery, fire-red, flame-colored, flame-red, flaming,
   florid, flush, flushed, fresh, fresh as April, full-blooded,
   glowing, goldanged, goldarned, goshdarn, green, gross, gules,
   hectic, hot, incarmined, incarnadine, infernal, inflamed, infrared,
   iron-red, lake-colored, laky, lateritious, lobster-red, lurid,
   maroon, out-and-out, perfect, pink, port-wine, puce, rank, red,
   red-complexioned, red-dyed, red-faced, red-fleshed, red-looking,
   reddened, reddish, reddish-amber, reddish-brown, rosy,
   rosy-cheeked, rubicund, rubify, rubiginous, rubric, rubricose,
   ruby, ruby-colored, ruby-red, ruddied, ruddle, ruddy-complexioned,
   ruddy-faced, rufescent, rufous, rust, rust-red, rusty, sanguine,
   scarlet, sheepish, stammel, sunburned, thoroughgoing, tile-red,
   unmitigated, vermilion, vinaceous, warm, wine, wine-colored,
   wine-red, youthful