The Collaborative International Dictionary of English v.0.48:

Speck \Speck\, v. t. [imp. & p. p. Specked; p. pr. & vb. n.
   Specking.]
   To cause the presence of specks upon or in, especially specks
   regarded as defects or blemishes; to spot; to speckle; as,
   paper specked by impurities in the water used in its
   manufacture.
   [1913 Webster]

         Carnation, purple, azure, or specked with gold.
                                                  --Milton.
   [1913 Webster]