What is a hammer with a head formed of a bundle of square bars, with pyramidal points, arranged in rows, or a solid head with a face cut into a number of rows of such points; -- used for dressing stone called?

bushhammer — A hammer with a head formed of a bundle of square bars, with pyramidal points, arranged in rows, or a solid head with a face cut into a number of rows of such points; -- used for dressing stone. (Webster's 1913.)