tamping

n.填塞物,捣紧

用坚硬物体（如杵子、扁木棒等）连续重重地敲击或捣实。

动词

1、He was tamping down a wad of tobacco with his thumb.
他用拇指重压一团烟叶。

2、The machine automatically tamps the coffee grounds before brewing.
这台机器会在冲泡前自动给咖啡粉压实。