Direct contribution to debate? (5)
I believe the answer is:
point
'direct' is the definition.
(pointing is a kind of directing)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for point that I've seen before include "Importance < of level" , "Dot -- full stop" , "cricketer on the off side" , "Tip; aim" , "Repair brickwork" .)