Source : Webster's Revised Unabridged Dictionary (1913)

Serigraph \Ser`i*graph\, n. [L. sericum silk + E. -graph.]
   An autographic device to test the strength of raw silk.

Source : WordNet®

serigraph
     n : a print made using a stencil process in which an image or
         design is superimposed on a very fine mesh screen and
         printing ink is squeegeed onto the printing surface
         through the area of the screen that is not covered by the
         stencil [syn: {silkscreen}, {silk screen print}]