arm

1. arm (noun) — sense 1

Definition: A weapon.

Example: A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

2. arm (noun) — sense 2

Definition: Heraldic bearings or insignia.

Example: The Duke's arms were a sable gryphon rampant on an argent field.

3. arm (noun) — sense 3

Definition: War; hostilities; deeds or exploits of war.

4. arm (verb) — sense 4

Definition: To supply with armour or (later especially) weapons.

Example: The king armed his knights with swords and shields.

5. arm (verb) — sense 5

Definition: To supply with the equipment, knowledge, authority, or other tools needed for a particular task; to furnish with capability; to equip.

Example: thou getteſt no more of me.
For I am ſure thy Office doth not arme thee with ſuch authoritie.

6. arm (verb) — sense 6

Definition: To prepare (a tool, weapon, or system) for action; to activate.

Example: Remember to arm the alarm system before leaving for work.