someone who tracks down game
"The hunter hired an experienced tracker to follow the footprints and locate the deer before they escaped into the deep woods."
Agent noun of track; one who, or that which, tracks or pursues, as a man or dog that follows game.
"The hounds were led by an experienced tracker who knew exactly where the deer had gone."
In plain English: A tracker is someone or something that follows and keeps track of another person or object's location.
"The hunter used a tracking dog to follow the deer's scent through the woods."
Usage: A tracker is someone or something that follows footprints to locate an animal or person, distinct from general surveillance where the target's path may not be left behind. This term specifically implies using physical evidence like trails rather than electronic signals or visual observation alone.
The word tracker is formed by adding the suffix "-er" to track. It originally referred to a person who follows tracks or signs left behind.