Arm To The Teeth Meaning

(idiomatic) To equip thoroughly with weapons.

Example: 1809, Washington Irving, Knickerbocker's History of New York, ch. 33:
  There, on the ramparts of the forts, stood Nicholas Koorn, armed to the teeth, flourishing a brass-hilted sword.
1910, H. Rider Haggard, Queen Sheba's Ring, ch. 15:
  Who can murmur sweet nothings to his adored when two soldiers armed to the teeth have been instructed never to let him out of their sight?
2009 May 25, Michael Schuman, "Building Bridges to China," Time:
  Both sides armed the Taiwan Strait to the teeth, turning it into one of Asia's most dangerous military flash points.