To rearm is to get weapons again, or to give someone else new weapons, after they had few or none, or after the old ones were used up or taken away. Countries rearm before a war, or after a peace that said they must not keep an army. One country can also rearm another by sending guns. This arm is the “weapons” arm — the one in arms and armed police — not the arm on your body. Those two English words look the same; they did not grow from the same place. It is a news and history word. Though actually, you may hear a joke use (“the kitchen is rearming with new knives”), and the joke only works because the real meaning is tools for fighting.

重新武裝