Meaning of TRACKING in English

■ noun

1》 Electronics the maintenance of a constant difference in frequency between connected circuits or components.

2》 the formation of an electrically conducting path over the surface of an insulator.

3》 US the streaming of school pupils.

4》 the alignment of the wheels of a vehicle.

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.