1. 携带武器（通常为枪支）的
Someone who is armed is carrying a weapon, usually a gun.

2. 使用武器的
An armed attack or conflict involves people fighting with guns or carrying weapons.

3. see also: arm;-armed

1. (used of persons or the military) characterized by having or bearing arms

e.g. armed robbery

2. (used of plants and animals) furnished with bristles and thorns

3. having arms or arms as specified
used especially in combination

e.g. the many-armed goddess Shiva