Source : Webster's Revised Unabridged Dictionary (1913)

Dog-eared \Dog"-eared`\, a.
   Having the corners of the leaves turned down and soiled by
   careless or long-continued usage; -- said of a book.

         Statute books before unopened, not dog-eared. --Ld.
                                                  Mansfield.

Source : WordNet®

dog-eared
     adj : worn or shabby from overuse or (of pages) from having
           corners turned down; "a somewhat dog-eared duke...a bit
           run down"-Clifton Fadiman; "an old book with dog-eared
           pages" [syn: {eared}]