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.
noun, plural men·ton·nières [men-tuh n-yairz; French mahn-taw-nyer] /ˌmɛn tənˈyɛərz; French mɑ̃ tɔˈnyɛr/. Armor.