Arms or legs?

Are octopus appendages more often called arms or legs?

In researching this question online, I found out that octopi have brains in their arms. They have a central brain system, but also mini brains in each arm that govern the action of that arm. The central brain sends a message, and then the little brain takes over to grab or feed or whatever. Cool, huh?

And, why, you might ask, am I researching octopus anatomy? Well, I am translating a medieval recipe for stuffed octopus, and the instructions include cutting off the "legs," chopping them up with herbs, spices and raisins, and stuffing them back into the cavity of the octopus body. Sounds delicious, right?