a line or route along which something travels or moves
When they reached the railroad tracks, he made for a crossings shanty.
Chapman, Allen
Track:( (v) follow, monitor
(n)1. path/ mark
2. the course along which something moves or progresses b: a way of life, conduct, or action c: one of several curricula of study to which students are assigned according to their needs or levels of ability d: the projection on the earth's surface of the path along which something (as a missile or an airplane) has flown
3. a sequence of events : a train of ideas : succession
Divers and rescue workers are searching for the bodies of seven still missing more than six weeks after the January 13 disaster.
Chicago Tribune
(Feb 29, 2012)