pugging

The process of mixing and working clay for bricks, etc.

In architecture, any composition laid under the boards of a floor, or on partition-walls, to prevent the transmission of sound. Also called deadening or deafening.

Thieving.

The act or process of working and tempering clay to make it plastic and of uniform consistency, as for bricks, for pottery, etc.

Mortar or the like, laid between the joists under the boards of a floor, or within a partition, to deaden sound; — in the United States usually called deafening.

Thieving.