What is a tobacco plug cutter?

There are a couple kinds of plug cutters. Plug tobacco is a type of solid brick chewing tobacco, the old twists and that were the way chewing tobacco used to be sold, nowdays they're not so popular but can be found at some tobacco shops especially in Kentucky, Tennessee, Indiana etc. One plug cutter is usually about the size of a keychain used to cut portioned plugs from the small bricks of plug tobacco. An antique plug cutter is more like a small tabletop machine that resembles a small paper cutter. The last kind that I know of is a very small tube with a sharpened blade, similar to the small chewing tobacco one, that is used for certain types of cigars to cut a hole in the end, as opposed to a regular cutter which cuts the end off. Some types of cigars smoke better with a small hole, some get filled with tar if the end isn't cut off ruining a good cigar.