pestle

A club-shaped, handheld tool for grinding or mashing substances in a mortar.

A large bar moved vertically to stamp or pound, as in a press or mill.

To pound, grind, or mash with or as if with a pestle.

To use a pestle.

To break or pound with a pestle; pulverize, grind, or rub with a pestle, as in a mortar.

To use a pestle; pound.

An instrument for pounding and breaking a substance in a mortar.

In machinery:

The vertically moving bar of a stamp-mill.

One of the pounders or mallets used in a fulling-mill.