disarm, unarm -- (take away the weapons from; render harmless)
Overview of adj unarmed
The adj unarmed has 2 senses
unarmed -- ((used of persons or the military) not having or using arms; "went alone and unarmed"; "unarmed peasants were shot down"; "unarmed vehicles")
unarmed -- ((used of plants or animals) lacking barbs or stings or thorns)