a club-shaped hand tool for grinding and mixing substances in a mortar
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
grind, mash or pulverize in a mortar; "pestle the garlic"
an act exempting someone; "he was granted immunity from prosecution"
a deduction allowed to a taxpayer because of his status (having certain dependents or being blind or being over 65 etc.); "additional exemptions are allowed for each dependent"