weapons, esp firearms
active hostilities
military service or a military profession
the heraldic insignia of a group or body, e.g. a family, corporation, or country
a call to arms
a call to get ready to fight
under arms
equipped or prepared for war
up in arms
angrily rebellious and protesting strongly
The entire community are up in arms about the proposed motorway
[Middle English armes (pl) weapons, via Old French from Latin arma weapons, tools]