To make slits in the paper during folding, at the fold, to prevent wrinkles and allow air to escape Books which perfect bind are perforated on the spine fold to aid in binding to top
to punch a series or row of small holes or slots in a material to facilitate tearing
To punch small slots or holes in the paper so that you can tear away specific parts of the sheet
To perforate something means to make a hole or holes in it. I refused to wear headphones because they can perforate your eardrums. + perforated per·fo·rat·ed Keep good apples in perforated polythene bags. to make a hole or holes in something
To bore through; to pierce through with a pointed instrument; to make a hole or holes through by boring or piercing; to pierce or penetrate the surface of