tamp

To pack down tightly by a succession of blows or taps.

To pack clay, sand, or dirt into (a drill hole) above an explosive.

In blasting for quarrying and mining purposes, to fill (the hole made by the drill or borer) with tamping, after the charge of powder or other explosive has been introduced.

To force in or down by frequent and somewhat light strokes.

In blasting, to plug up with clay, earth, dry sand, sod, or other material, as a hole bored in a rock, in order to prevent the force of the explosion from being misdirected.