D defs.my
Entry 2 senses Webster, 1913

Tamping

/tăm'-pĭng/ · Tamp·ing · IPA /tˈæmpɪŋ/
01 n. 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 ro…
  1. 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. 2.
    The material used in tamping. See Tamp, v. t., 1. See: Tamp
Phrases & compounds
Tamping iron — an iron rod for beating down the earthy substance in tamping for blasting.