(rail transport) Having four running lines, usually two in each direction.

(rail transport) Railway track mounted on a concrete (or asphalt) base, without the use of ballast.

plural of slab track

using the wrong general approach to a particular task or problem; pursuing something in an unpromising way

simple past tense and past participle of fast-track

A lightbulb used in track lighting

A kind of running shoe fitted with spikes on the bottom

(rail transport) An assembled section of railway track.

plural of track panel

(Internet, YouTube) An automatically generated YouTube version of a work of musical art, typically consisting of a full version of the work and an image of the musical track or album.