ball mill

noun

: a pulverizing machine consisting of a rotating drum which contains pebbles or metal balls as the grinding implements

Example Sentences

Recent Examples on the Web

Noisy tumblers known as ball mills operate almost continually in mining communities, often next to homes, grinding the ore along with mercury and water to extract the gold. —National Geographic, 24 May 2016

For 15 years, Resti's family has operated a ball mill just outside the kitchen door. —National Geographic, 24 May 2016

Word History

First Known Use

1884, in the meaning defined above