a hammer used for pounding / a machine tool that pounds / a hammer-shaped tool used to hit something, such as a gavel / a rapper; a door knocker / a piano or dulcimer hammer / the malleus / a throwing hammer / a hammer with bas relief marks used to create imprints on wood, leather etc. / the advantage of throwing the last stone / the part of a clock that strikes the bell

(dated, informal) crazy; deranged

jackhammer

Alternative form of requin-marteau

a mechanical pounding tool where a heavy mass moves vertically; a steam or power hammer

(climbing) an ice axe where the adze has been replaced with a hammering tool

a war hammer

hammerhead shark

(athletics) hammer throw (athletic throwing event where the object to be thrown is a heavy steel ball attached with wire to a handle)

hammer thrower