Definitions
1.nounAgent noun of track; one who, or that which, tracks or pursues, as a man or dog that follows game.
2.nounIn an organ, a light strip of wood connecting (in path) a key and a pallet, to communicate motion by pulling.
3.nounA type of computer software for composing music by aligning samples on parallel timelines.
4.nounA musician who writes music in a tracker.
5.nounA computer program that monitors something.
6.nounA tracker mortgage.