a burst of speed at any point during a long race, as near the finish line.
5.
a brief spell of great activity.
Origin: 1560–70; perhaps continuing Old English *sprintan (compare gesprintan to emit); cognate with Old Norse spretta,Old High German sprinzan to jump up
1566, "to spring, dart," from O.N. spretta "to jump up." Meaning "to run a short distance at full speed" first recorded 1871. The noun is attested from 1865.