Make something known for the prodigal (6)
I believe the answer is:
reveal
'make' is the definition.
(thesaurus)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for reveal that I've seen before include "Make known or visible" , "Expose, divulge" , "Make disclosure" , "window, in part" , "Expose or disclose" .)