bloodshot

from WordNet (r) 3.0 (2006)

bloodshot
    adj 1: (of an eye) reddened as a result of locally congested
           blood vessels; inflamed; "bloodshot eyes"

from The Collaborative International Dictionary of English v.0.48

Bloodshot \Blood"shot`\, a. [Blood + shot, p. p. of shoot to
   variegate.]
   Red and inflamed; suffused with blood, or having the vessels
   turgid with blood, as when the conjunctiva is inflamed or
   irritated.
   [1913 Webster]

         His eyes were bloodshot, . . . and his hair disheveled.
                                                  --Dickens.
   [1913 Webster]