stamp battery

English Thesaurus

1. a series of stamps operated in one mortar for crushing ores (noun.artifact)

hypernym	:	stamp mill, stamping mill,
definition	:	a mill in which ore is crushed with stamps (noun.artifact)

part holonym	:	pestle, stamp,
definition	:	machine consisting of a heavy bar that moves vertically for pounding or crushing ores (noun.artifact)