A rough path or minor road, typically one beaten by use rather than constructed. A continuous line of rails on a railroad. A recording of one song or piece of music. The transverse distance between a vehicle's wheels. A group in which schoolchildren of the same age and ability are taught. Follow the course or trail of (someone or something), typically in order to find them or note their location at various points. (of wheels) run so that the back ones are exactly in the track of the front ones. (of a tunable circuit or component) vary in frequency in the same way as another circuit or component, so that the frequency difference between them remains constant. Assign (a student) to a course of study according to ability. Tow (a boat) along a waterway from the bank.