Something speedy in report (8)
I believe the answer is:
bulletin
'report' is the definition.
(I know that bulletin is a type of report)
'something speedy in' is the wordplay.
'something speedy' becomes 'bullet' (bullet can mean anything that moves very fast).
'bullet'+'in'='BULLETIN'
(Other definitions for bulletin that I've seen before include "Report for publication or broadcast" , "News report" , "Short official statement of news" , "Newsletter, report" , "Regular news up-date" .)