To monitor; to track or record; to understand or follow.

(softball, baseball) The dirt or other material on the edge of a baseball or softball field that warns a player that he or she is approaching the fence, especially the portion in the outfield.

(sports, chiefly racing) The lane or track nearest to the interior. / (figuratively) Any advantage.

simple past tense and past participle of fast track

Used other than figuratively or idiomatically: see track, record.

(music, film) An audio track having the same name as the album, EP or film that it is taken from.

plural of warning track

A pair of parallel rails along which a railway train runs.

plural of dreaming track

(idiomatic) A part of a town or city that is particularly impoverished, and usually dangerous or undesirable as a result.