from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. divination using the shoulder blades of animals. It was taken from a dead animal and thrown into a fire, the cracks formed in the bone were then interpreted.
- n. divination through inspecting one's shoulders. In ancient times, this inspection was to see whether a human was suitable to be a sacrifice to the Gods.
From Latin armus "shoulder blade" + -mancy (Wiktionary)