the.com/traceur

means A practitioner of parkour who runs, climbs, vaults, and jumps through urban or natural environments, treating obstacles as a path rather than a stop.

from French, from 'tracer' meaning 'to trace' or 'to draw a path' — the same verb used for plotting a route or a line. The term emerged from the French discipline of parkour in the late 20th century, where founders described what they did as 'tracing' a line through space, finding the fastest, most fluid route over, under, and through whatever stood in the way. A traceur, then, is literally 'one who traces' — the human pen drawing a route across rooftops and railings.