Noun
pebble mill (plural pebble mills)
a tumbling mill that grinds or pulverizes materials without contaminating them with iron; used especially for ceramic ingredients
On his refusal of a set for MTV Unplugged: It's one of the biggest career mistakes I've ever made. I'd be so much more wealthy, because of America. I was offered one of the first ones. But I saw Eric Clapton on it, and it reminded me of Pebble Mill At One. Chris Rea