A cherry pitter is a device for removing the pit from a cherry, leaving the cherry relatively intact. Many styles of cherry pitters exist, including small tools held in the hand, domestic crank-operated machines with a hopper, and industrial machines.
Use of a hand-held cherry pitter involves first removing the stem, then driving a plunger through the cherry in a way that the stone is ejected out the other side of the fruit, often attached to or held by the plunger. Some of the devices used hollow cylindrical plungers that cut the stone out along with adjacent flesh of the fruit. Other devices use a solid plungers (sometimes with teeth, sometimes just a solid shape) to force the pit to breach the flesh. In almost all cases, the fruit is supported against the plunger by a surface with a hole in the middle, so that the entire fruit does not rupture.