捣板
铁夯

Tamping \Tamp"ing\, n.
1. The act of one who tamps; specifically, the act of filling
up a hole in a rock, or the branch of a mine, for the
purpose of blasting the rock or exploding the mine.

2. The material used in tamping. See {Tamp}, v. t., 1.

{Tamping iron}, an iron rod for beating down the earthy
substance in tamping for blasting.