What does pin the doll mean?

Pinching is a game in which players manipulate a machine arm to pinch items such as stuffed animals and toys inside a crane machine. Players put in coins and use buttons or joysticks on the machine to control the movement of the machine arm, with the goal of accurately pinching the item. Clip doll games are popular worldwide, and their difficulty lies in the control of the machine arm and the placement of the items.