n. a powerful machine equipped with caterpillar traction and a horizontal steel blade or ram, used for clearing land, building roads, making firebreaks, etc.
1950  Later, through Rene, he met one of the 'dozer drivers, a young French Canadian from the LaSarre region, and managed to talk his way into being allowed to try out the machine. . . .
1958  Often, the 'dozer will hit ridges of heavy timber where each tree has to be taken out separately. . . .
1966  [Advert.] COMPLETELY UNRESERVED AUCTION . . . CONSTRUCTION & LOGGING EQUIPMENT . . . Some of Major Items from Cattermole Timber: . . . 1963 Models Hyd. Angle Dozers and Hyster D89A Winches. . . .