a vehicle, as a bulldozer, for pushing or carrying excavated earth from place to place.
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British Dictionary definitions for earth mover
a machine, such as a bulldozer, that is used for excavating and moving large quantities of earth
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