pĕr-armo — Lewis & Short
pĕr-armo, āvi, ātum, 1, v. a.,
I to arm or equip well (post-class.):
perarmatus exercitus,Curt. 4, 9, 6; 23:
manum gladius perarmat,Prud. Cath. 6, 85; 7, 93.