tracker

• POS: Noun
• HYPHEN: track=er

CIDE DICTIONARY

tracker, n. 

•  One who, or that which, tracks or pursues, as a man or dog that follows game.  [1913 Webster]

  "And of the trackers of the deer
  Scarce half the lessening pack was near."  [1913 Webster]
•  In the organ, a light strip of wood connecting (in path) a key and a pallet, to communicate motion by pulling.  [1913 Webster]

OXFORD DICTIONARY

tracker, n.
1 a person or thing that tracks.
2 a police dog tracking by scent.
3 a wooden connecting-rod in the mechanism of an organ.
4 = black tracker.