The miter saw, sometimes called a chopsaw, is a carpenter's tool that has found a home in the woodworking shop. Its cuts aren't always precise enough for furniture joinery, but they are plenty good for many tasks. More than anything else, the miter saw is used for cutting pieces to rough length before they move on to the more precise machines.
A wide variety of miter saws are available, some that simply chop downward, and more expensive models where the motor and blade assembly travels on sliding rails to increase the tool's cutting capacity.