"pestle" in the noun sense
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
a club-shaped hand tool for grinding and mixing substances in a mortar
"pestle" in the verb sense
grind, mash or pulverize in a mortar
"pestle the garlic"
Source: WordNet® (An amazing lexical database of English)
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