drop hammer

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A machine consisting of an anvil or base aligned with a hammer that is raised and then dropped on molten metal, used to forge or stamp the metal resting on the anvil.

from The Century Dictionary.

• noun Same as drop-press.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun device for making large forgings