arm-

1. One of the two long parts or limbs attached to the shoulder of the human body with a hand at each end.
2. The part of a piece of clothing that covers the arm.
3. A side piece of a chair or sofa, designed to support the arms of anyone sitting in it.
4. The part of an animal's body that is similar to the human arm.
5. A flexible limb in an invertebrate animal; such as, an octopus.
6. A long thin part that is projecting from something larger; for example, an arm of the sea.
7. A branch of an organization, a section of the armed forces; for example, the military has a combat arm.

1. To equip a person or a country with weapons: "They armed the troops with new weapons."
2. To prepare a weapon so that it is ready to use in a military action, as by releasing a safety device.
3. To provide someone with the information or equipment needed to accomplish something: "She was armed with all of the information she will need to complete the report."

The complete assemblage of equipment necessary for a task: "The medical students visited the medical museum and saw the armamentarium used by doctors from a previous century."

In a military sense, powerful or strong in the arms of war: The opponent seemed to be mighty in battle, or very armipotent.

1. A formal agreement to temporarily end military fighting by mutual consent; a truce: For the holiday the opponents decided on an armistice and both sides wanted peace talks in hopes of ending the conflict.
2. Etymology: from French armistice, coined on the model of Latin solstitium, from Latin arma, "arms" + -stitium which is from Latin sistere, "to cause to stand, to come to a stop, to make stand still".