Pestle
Part of speech: verb
Definition: To pound, crush, rub or grind (things), as in a mortar with a pestle.
Part of speech: noun
Definition: A club-shaped, round-headed stick used in a mortar to pound, crush, rub or grind things.
Pounder
Part of speech: noun
Definition: A vessel in which something is pounded, or something used in pounding; see pestle and mortar(in combination) A gun capable of firing a specified weight of shot(in combination) Something that weighs a specified number of pounds