Point learnt afresh for all time (7)
I believe the answer is:
eternal
'for all time' is the definition.
(I've seen this in another clue)
'point learnt afresh' is the wordplay.
'point' becomes 'e' (compass point).
'afresh' indicates anagramming the letters.
'learnt' anagrammed gives 'ternal'.
'e'+'ternal'='ETERNAL'
(Other definitions for eternal that I've seen before include "non-stop" , "going on for ever" , "Without beginning or end" , "Never-ending, existing always" , "Valid for all time" .)