The Collaborative International Dictionary of English v.0.48:
Bulldozer \Bull"do`zer\, n. One who bulldozes. [Slang] [1913 Webster] [1913 Webster]WordNet (r) 3.0 (2006):
bulldozer n 1: large powerful tractor; a large blade in front flattens areas of ground [syn: bulldozer, dozer]