A person or animal that follows or pursues, particularly in the context of hunting or monitoring a political rival in us politics.
In an organ, a light strip of wood connecting (in path) a key and a pallet, to communicate motion by pulling.
(computing) A type of computer software for composing music by aligning notes or samples on parallel timelines.
(computing) A musician who writes music in a tracker.
(computing) A computer program or server software that monitors or coordinates peers in the bittorrent protocol.
(finance) A tracker mortgage.