1. (

• stamp ,
• pestle ,

) machine consisting of a heavy bar that moves vertically for pounding or crushing ores ;

2. (

• pestle ,
• muller ,
• pounder

) a heavy tool of stone or iron (usually with a flat base and a handle) that is used to grind and mix material (as grain or drugs or pigments) against a slab of stone ;

3. (

• pestle

) a club-shaped hand tool for grinding and mixing substances in a mortar ;

1. (

• pestle

) grind, mash or pulverize in a mortar; "pestle the garlic" ;