It's not an unreasonable guess, to be entirely honest. The question of what, exactly, it might have come to mean over the centuries is another one entirely, not to mention one they can't exactly ask, but it makes sense at the very least.

Still, rather than dwell on that, he turns his attention to the book in her hands. They might have found one matching symbol, but he doesn't for a moment imagine that's going to be enough to get them into the next level of the map. One password might have been enough to get them to the next level last time, but neither had there been something as involved as what they're currently staring down.

"That one," he comments, after a moment or three, reaching over her shoulder to point at a symbol that's translated as 'home.'