Likely from French routier and Dutch ruiter, meaning "something that finds a way".
#A thing that ruts.
#A tool used in peat cutting.
#A guide who leads the way through a difficult or unknown course.
#A pilot book or seaman's guide carried by navigators in the Middle Ages; a precursor to the modern navigation chart.
trans-top|a thing that ruts
trans-top|a tool used in peat cutting
trans-top|a pilot book
Dutch: logboek or scheepsjournaal