Source : Webster's Revised Unabridged Dictionary (1913)

Patchy \Patch"y\, a.
   Full of, or covered with, patches; abounding in patches.

Source : WordNet®

patchy
     adj : irregular or uneven in quality, texture, etc.; "a patchy
           essay"; "patchy fog"
     [also: {patchiest}, {patchier}]

Source : Free On-Line Dictionary of Computing

PATCHY
     
        A {Fortran} {code management} program written at {CERN}.