track1

noun

• 1a rough path or minor road, typically one beaten by use rather than constructed:follow the track to the farm a forest track
• a prepared course or circuit for athletes, horses, motor vehicles, bicycles, or dogs to race on:a Formula One Grand Prix track
• the sport of running on a track.
• (usually tracks) a mark or line of marks left by a person, animal, or vehicle in passing:he followed the tracks made by the police cars in the snow
• the course or route followed by someone or something (used especially in talking about their pursuit by others):I didn’t want the Russians on my track
• a course of action; a way of proceeding:defense budgeting and procurement do not move along different tracks from defense policy as a whole

• 2a continuous line of rails on a railroad.
• a metal or plastic strip or rail from which a curtain or spotlight may be hung or fitted.
• a continuous articulated metal band around the wheels of a heavy vehicle such as a tank or bulldozer, intended to facilitate movement over rough or soft ground.
• Electronics a continuous line of copper or other conductive material on a printed circuit board, used to connect parts of a circuit.
• Sailing a strip on the mast, boom, or deck of a yacht along which a slide attached to a sail can be moved, used to adjust the position of the sail.

• 3a recording of one song or piece of music:the CD contains early Elvis Presley tracks
• a lengthwise strip of magnetic tape containing one sequence of signals.
• the soundtrack of a film or video.

• 4the transverse distance between a vehicle’s wheels.

• 5a group in which schoolchildren of the same age and ability are taught.

verb

• 1follow the course or trail of (someone or something), typically in order to find them or note their location at various points:secondary radars that track the aircraft in flight he tracked Anna to her room
• follow and note the course or progress of:they are tracking the girth and evolution of stars
• [no object] follow a particular course:the storm was tracking across the ground at 30 mph
• (of a stylus) follow (a groove in a record).
• [no object] (of a film or television camera) move in relation to the subject being filmed:the camera eventually tracked away

  [with reference to early filming when a camera was mobile by means of a track]
• (track something up) leave a trail of dirty footprints on a surface.
• (track something in) leave a trail of dirt, debris, or snow from one’s feet:the road salt I’d tracked in from the street

• 2 [no object] (of wheels) run so that the back ones are exactly in the track of the front ones.

• 3 [no object] Electronics (of a tunable circuit or component) vary in frequency in the same way as another circuit or component, so that the frequency difference between them remains constant.

• 4assign (a student) to a course of study according to ability.