armer--prophetes.ai

▪ I. armer
    (ˈɑːmə(r))
    [f. arm v.¹ + -er¹. Cf. OF. armeor, -eur.]
    One who arms.

1611 Cotgr., Armateur, An Armer, a provider of armes or weapons.

▪ II. armer, -er, -y
obs. ff. armour n., -er, -y, armory.

Oxford English Dictionary