Definition of arme blanche in English:

arme blanche

noun

Military historical
  • Frequently with the. Any of various weapons having a sharpened metal point or blade, as a pike, lance, sword, etc., especially one used by cavalry. Hence in extended use: cavalry; mounted troops. Now historical.

Origin

Late 18th century. From French arme blanche from arme weapon + blanche, feminine of blanc white.

Pronunciation

arme blanche

/ˌɑːm ˈblɒ̃ʃ/