Definitions by Silent 3

Perfory 

The strips of paper on each edge of dot-matrix printer paper.

It's perforated, and it's on the periphery.

Hence, "perfory."

I can't tell you how many times I used to tear the sheet of paper while removing the perfory. I'm so happy they did away with those dot-matrix printers.

Perfory by Silent 3 April 14, 2009