no obj.［usu. as noun stoping］
1- (in mining) excavate a series of steps or layers in (the ground or rock)（采矿中）回采, 用梯段法采矿。
1.1
- as noun stoping Geology the process by which country rock is broken up and removed by the upward movement of magma【地质】受顶蚀作用。
词源
mid 18th cent.: apparently related to the noun STEP.