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Noćnik
(n.) a person who prefer to travel at night. (Croatian)
First used in a historical song to describe a person who was traveling at night to avoid being seen by an enemy army.

(n.) a person who prefer to travel at night. (Croatian)
First used in a historical song to describe a person who was traveling at night to avoid being seen by an enemy army.
That's a new one! How commonly is it used I wonder...
Not being Croatian, I have no idea, but I think it could be a useful word in fantasy writing.