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 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