Macuahuitl

A macuahuitl is a weapon used by ancient civilizations like the Aztecs. It's like a big sword made out of wood, but instead of having a sharp metal blade, it has sharp obsidian (glass) pieces sticking out of it like teeth. When someone swung a macuahuitl, it could cause a lot of damage because the obsidian pieces would cut through things like a knife through butter. Imagine having a really big toothbrush, but instead of bristles, it has sharp pieces of glass, and instead of brushing your teeth, you use it to hit things really hard. That's kind of what a macuahuitl is like!