Point of name given to Norse deity (5)
I believe the answer is:
thorn
'point' is the definition.
(I have seen 'Point of plant' mean 'thorn' so perhaps 'point' could also mean 'thorn')
'name given to norse deity' is the wordplay.
'name' becomes 'n' (common abbreviation e.g. on forms).
'given to' is a charade indicator (letters next to each other).
'norse deity' becomes 'thor' (Thor is an example).
'n' put after 'thor' is 'THORN'.
'of' acts as a link.
(Other definitions for thorn that I've seen before include "Prickle on a plant" , "Sharp spike on a plant" , "Sharp-pointed tip on a stem" , "Spiny bush" , "Sharp woody projection" .)