An appeal to fight or to engage in conflict. / (figuratively) An appeal to undertake a particular course of action or to support a specific cause; a call to action.

(heraldry) A heraldic bearing in the form of a visual pun.

plural of call to arms

plural of comrade in arms

plural of arms factory

plural of yard-arm

plural of control arm

plural of input arm

plural of king-at-arms

plural of king-of-arms