Run prints round (6)
I believe the answer is:
sprint
'run' is the definition.
(I know that sprint is a more specific form of run)
'prints round' is the wordplay.
'round' indicates an anagram.
'prints' anagrammed gives 'SPRINT'.
(Other definitions for sprint that I've seen before include "Short fast run" , "quick run" , "Quick dash" , "To make fast progress" , "Short race at full speed" .)