the mark or trail left by something that has passed by

any road or path affording passage, esp a rough one

a rail or pair of parallel rails on which a vehicle, such as a locomotive, runs, esp the rails together with the sleepers, ballast, etc, on a railway

a course of action, thought, etc

a line of motion or travel, such as flight

an endless jointed metal band driven by the wheels of a vehicle such as a tank or tractor to enable it to move across rough or muddy ground

the path of a particle of ionizing radiation as observed in a cloud chamber, bubble chamber, or photographic emulsion

a path on a magnetic recording medium, esp magnetic tape, on which information, such as music or speech, from a single input channel is recorded

any of a number of separate sections in the recording on a record, CD, or cassette

a metal path that makes the interconnections on an integrated circuit

the distance between the points of contact with the ground of a pair of wheels, suchas the front wheels of a motor vehicle or the paired wheels of an aircraft undercarriage

a hypothetical trace made on the surface of the earth by a point directly below an aircraft in flight

to follow the trail of (a person, animal, etc)

to follow the flight path of (a satellite, spacecraft, etc) by picking up radio or radar signals transmitted or reflected by it

(of a camera or camera operator) to follow (a moving object) in any direction while operating

to move (a camera) towards the scene (track in) or away from the scene (track out)

to follow a track through (a place)

(of the pick-up, stylus, etc, of a record player) to follow the groove of a record