What is the meaning of Marteau?

A postiche curl.

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

crazy; deranged

Source: wiktionary.org