Lecturer making money having knowledge (8)
I believe the answer is:
learning
'knowledge' is the definition.
(learning is a kind of knowledge)
'lecturer making money' is the wordplay.
'lecturer' becomes 'l'.
'making money' becomes 'earning' (I've seen this before).
'l'+'earning'='LEARNING'
'having' is the link.
(Other definitions for learning that I've seen before include "Lore" , "Erudition - education" , "Cognitive process of acquiring skill or knowledge" , "Researching - scholarship" , "Aquiring skill or knowledge" .)