To cut a roll of stock to specified widths Either rotary or stationary knives or blades are used with mechanical unwinding and rewinding devices Also applied to sheet material, as boxboard
If you slit something, you make a long narrow cut in it. They say somebody slit her throat He began to slit open each envelope She was wearing a white dress slit to the thigh
Usually narrow entry point for light to a spectrograph The slit is often made from a pair of ordinary razor blades which can be machined to achieve very straight edges This gives a precisely determined light source for the instrument
(1) a cut through the backing sheet or release liner of a decal to facilitate removal of the decal for application to the substrate; (2) a cut through any sheet material for any purpose, but usually to indicate a separation line or to permit the escape of air if the sheet is closely contacted with another true surface
A slit is a long narrow opening in something. She watched them through a slit in the curtains. to make a straight narrow cut in cloth, paper, skin etc. a long straight narrow cut or hole