Source : Webster's Revised Unabridged Dictionary (1913)

Mimeograph \Mim"e*o*graph\, n. [Gr. ? to imitate + -graph.]
   An autographic stencil copying device invented by Edison.

Source : WordNet®

mimeograph
     n : a rotary duplicator that uses a stencil through which ink is
         pressed (trade mark Roneo) [syn: {mimeo}, {mimeograph
         machine}, {Roneo}, {Roneograph}]
     v : print copies from (a prepared stencil) using a mimeograph;
         "She mimeographed the syllabus" [syn: {mimeo}]