(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.

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.

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

simple past tense and past participle of fast track

Using the correct general approach to a particular task or problem; pursuing something in a promising way.

A form of magnetic tape technology for audio storage, popular from the mid-1960s to the early 1980s. / (countable) A cartridge for an 8-track player.

(Internet) The use of code associated with a single pixel tag (invisible to the user) to monitor the activity of the user, especially his use of advertisements

(sports) referring to track and field athletics.