(music) A series of audio cues used to synchronize sound recordings, sometimes to a moving image.

A trail left by a pair of skis, or one artificially created for the purpose of skiing on.

a dirt road

(rail transport) a section of railway line or tramline consisting of two parallel tracks, one being used in one direction and the other in the opposite direction.

(informal) The path chosen by a female employee who elects to leave full-time work in order to have a baby.

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.

A vehicle combining both wheels and treads (caterpillar tracks).

Describing such a vehicle; half-tracked