Company knowledgable about way of obtaining discount? (6)
I believe the answer is:
coupon
'discount?' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
'company knowledgable about way of' is the wordplay.
'company' becomes 'co' (abbreviation).
'knowledgable about way of' becomes 'upon' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'co'+'upon'='COUPON'
'obtaining' is the link.
Can you help me to learn more?
(Other definitions for coupon that I've seen before include "Entry form" , "Token" , "betting slip" , "means to buy goods" , "Voucher or ticket" .)