The point in some strange portents (5)
I believe the answer is:
omens
'portents' is the definition.
('omen' can be a synonym of 'portent')
'the point in some strange' is the wordplay.
'the point' becomes 'n' (N is an example).
'in' indicates putting letters inside.
'strange' indicates anagramming the letters.
'some' is an anagram of 'omes'.
'n' going within 'omes' is 'OMENS'.
(Other definitions for omens that I've seen before include "Prognostications" , "Harbingers, portents" , "Signs of things to come" , "Portents, prophetic signs" , "Augurs" .)