verb / noun
trace
TRAYS/treɪs/
To follow or discover the course, origin, or outline of something.
The woman traces the river's course on the map.

Etymology
Latin “pull, draw” also produced a noun meaning “track” or “course.” This underlies tracing a course or outline, though the early development of these meanings is not entirely clear.
In context
It also allowed us to trace her black ancestry back into the 1700s, something we can almost never do, and to reveal in the end the rarest of all finds in African-American genealogy, the document that freed her first ancestor.
More examples
- We traced the river's course on a map.
- She traces the leaf's outline with a pencil.
- Police put a trace on the threatening call.
Forms
trace · traces · traced · tracing
tracing noun — A copy made by following existing outlines.