/ (ˈwɒʃərɪ) /
noun plural -ries
a plant at a mine where water or other liquid is used to remove dirt from a mineral, esp coal
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Examples from the Web for washery
A railway along the top of the bank brings the coal from the screens or washery.