Track  —n. 1 a mark(s) left by a person, animal, vehicle, etc. B (in pl.) Such marks, esp. Footprints. 2 rough path, esp. One beaten by use. 3 continuous railway line. 4 a racecourse; circuit. B prepared course for runners etc. 5 a groove on a gramophone record. B section of a record, cd, or magnetic tape containing one song etc. C lengthwise strip of magnetic tape containing a single sequence of signals. 6 line of travel (track of the comet). 7 band round the wheels of a tank etc. 8 line of thought or action. —v. 1 follow the track of. 2 trace (a course, development, etc.) By vestiges. 3 (often foll. By back, in, etc.) (of a film or television camera) move in relation to the subject being filmed.  in one's tracks colloq. Where one stands, instantly (stopped him in his tracks). Keep (or lose) track of follow (or fail to follow) the course of. Make tracks colloq. Depart. Make tracks for colloq. Go in pursuit of or towards. Off the track away from the subject. Track down reach or capture by tracking.  tracker n. [french trac]