Burning desire of dad to collar younger Arab (9)
I believe the answer is:
pyromania
'burning desire' is the definition.
(desire to burn)
'dad to collar younger arab' is the wordplay.
I cannot quite see how this works, but
'collar' could be 'roman' (Roman collar is an example) and 'roman' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
'of' is the link.
Can you help me to learn more?
(Other definitions for pyromania that I've seen before include "Obsession with burning things" , "lighting up for fun?" , "Obsessive desire to start fires" , "Fire-raising impulse" , "Flaming madness!" .)