Points to strange remedy (5)
I believe the answer is:
serum
'remedy' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.
'points to strange' is the wordplay.
'points' becomes 'se' (two compass points).
'to strange' becomes 'rum' (similar in meaning).
'se'+'rum'='SERUM'
Can you help me to learn more?
(Other definitions for serum that I've seen before include "potential shot in the arm?" , "Antitoxin derived from blood" , "Constituent of blood" , "Watery fluid from animal tissue" , "Muser in blood" .)