arm [-s] n

OE < Germanic < IE ar-, fit, join.

  1. Power; might; strength.
  2. Protection; refuge.
  3. Any limb-like feature extending from a large mass.
  4. Transport; translation; death and resurrection; means of transition from mortality to the afterlife.
  5. Weapon; [metonymy] gallantry; protection of a knight in armor.
  6. Limb extending from shoulder to hand.
  7. Phrase. “Arm in arm”: together; in close communion.

arm v

see arms, plural n.

  1. Fortify; put on protect itself; gird to defend itself.