mentonnière
[ men-tuh n-yair; French mahn-taw-nyer ]
/ ˌmɛn tənˈyɛər; French mɑ̃ tɔˈnyɛr /
noun, plural men·ton·nières [men-tuh n-yairz; French mahn-taw-nyer] /ˌmɛn tənˈyɛərz; French mɑ̃ tɔˈnyɛr/. Armor.
any of various plate pieces for protecting the lower part of the face, as a beaver.