Boots might have this pain ointment initially by November (7)
I believe the answer is:
crampon
'boots might' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.
'this pain ointment initially by november' is the wordplay.
'this pain' becomes 'cramp' (I have seen 'Muscular pain' mean 'cramp' so perhaps 'pain' could also mean 'cramp').
'initially' suggests taking the first letters.
'by' says to put letters next to each other.
'november' becomes 'N' (phonetic alphabet: alpha, bravo, charlie etc.).
The first letter of 'ointment' is 'o'.
'cramp'+'o'+'n'='CRAMPON'
'have' is the link.
Can you help me to learn more?
(Other definitions for crampon that I've seen before include "Climbing equipment" , "Climbing device" , "mountaineering equipment?" , "Climber's boot spikes" , "Climber's aid" .)