"An xeno is in other words, an... alien," he says, puzzling out the English word. "It would more accurately translate as 'other', but 'alien' seems to work."

Hmm. That seems to sound about right.

"But I've never met an alien that doesn't have its own interests in mind. The ones that don't just want to eat you, that is. Some co-operation can be temporarily excused if there's a greater enemy at hand, but you'd be mad to trust one further than you could throw it."