triturate

To rub, crush, grind, or pound into fine particles or a powder; pulverize.

A triturated substance, especially a powdered drug.

To rub, grind, or bruise; specifically, to grind to a powder.

In physiology, to grind with the grinders; masticate with the molar teeth; chew to a pulp.

A form of medicine in which an active substance has been thoroughly powdered and mixed by rubbing up with sugar of milk.