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bushhammer

American  
[boosh-ham-er] / ˈbʊʃˌhæm ər /
Or bush hammer

noun

Masonry.
  1. a hammer for dressing stone, having one or two square faces composed of a number of pyramidal points.


bushhammer British  
/ ˈbʊʃˌhæmə /

noun

  1. a hammer with small pyramids projecting from its working face, used for dressing stone

"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

Etymology

Origin of bushhammer

1880–85; < German Bosshammer, equivalent to obsolete boss ( en ) to beat + hammer hammer