pestle

nouns

machine consisting of a heavy bar that moves vertically for pounding or crushing ores
pestle, stamp
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
muller, pestle, pounder
a club-shaped hand tool for grinding and mixing substances in a mortar
pestle
is a type of (narrower)
a tool used with workers' hands
hand tool

verbs

grind, mash or pulverize in a mortar
"pestle the garlic"
pestle
is a type of (narrower)
reduce to small pieces or particles by pounding or abrading
"grind the spices in a mortar"; "mash the garlic"
bray, comminute, crunch, grind, mash