simple past tense and past participle of track

Mounted on tracks.

simple past tense and past participle of track with

Third-person singular simple present indicative form of track with

present participle of track down

The continuous monitoring of the position and range of a remote object using radio

(Scrabble) The act of keeping track of which letters have been played, usually by crossing them off a printed list.

(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

present participle of fast track

(cinematography, film) A continuously recorded segment containing no edits, in which the camera is moved (often mounted on a dolly rolling on tracks) so as to sweep through an extensive area or to follow the physical movement of characters or events.