Quick answer
Tracy is a boy/girl name meaning "domain belonging to Thracius".
Meaning and history
From an English surname that was taken from a Norman French place name meaning "domain belonging to Thracius ". Charles Dickens used it for a male character in his novel The Pickwick Papers (1837). It was later popularized as a feminine name by the main character Tracy Lord in the movie The Philadelphia Story (1940). This name is also sometimes used as a diminutive of Theresa.
Notes and context
Usage: english