Prints! There are lots of types of prints that you can do. Screenprinting, linoleum, litho, etching, wood... I consider printmaking to be anything where you have something to make, well, prints from by applying inks. That's a reduction print, and I did it with linoleum and ran in through a big printing press.
I'm sure edscoble will be able to go into more detail about processes, etc. I don't know very much about printing.