Function: noun
Date: 1903
: a pulverizing machine consisting of a rotating drum which contains pebbles or metal balls as the grinding implements
Function: noun
Date: 1903
: a pulverizing machine consisting of a rotating drum which contains pebbles or metal balls as the grinding implements
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012