D defs.my
Entry 3 senses Webster, 1913

Unarmed

/ən-ärmd'/ · Un·armed · IPA /ˌʌnˈɑɹmd/
01 a. Not armed or armored; having no arms or weapons.
  1. 1.
    Not armed or armored; having no arms or weapons.
  2. 2.
    Having no hard and sharp projections, as spines, prickles, spurs, claws, etc.(Nat. Hist.)
  3. 3.
    Not in a state in which it may be detonated; unable to be detonated; -- used of nuclear and certain other explosive devices, which, as a safety precaution, are stored and transported in a state in which normal triggering mechanisms will not function to cause the device to detonate. The weapon must first be armed by a separate action, and only subsequent to such arming will the weapon be able to detonate.